About 4.5 billion years ago, a dense cloud of interstellar gas and dust gave rise to our solar system. The supernova shockwave from a nearby exploding star, or supernova, may have caused the cloud to collapse.
What planet was the first to form?Within the initial 10 million years of the solar system's formation, Jupiter and Saturn are assumed to have formed first and fast. Rocky planets start to develop in the warmer, star-closer regions of the disk. There isn't much gas left for the terrestrial planets to accrete after the formation of the icy giants.
Was there an earlier solar system?Let's, therefore, travel back in time more than 4.6 billion years to the time before Earth, Sun, and even Solar System existed. We were surrounded by gas and dust, most likely in one of the spiral arms. Do you want to know how it appeared? Your favorite Hubble Space Telescope images should be helpful.
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Our solar system was created from a massive cloud of interstellar gas and dust some 4.5 billion years ago. The collapse of the cloud may have been triggered by the supernova boom from a nearby exploding star.
Jupiter and Saturn are believed to have formed initially and quickly during the first 10 million years of the solar system's creation. In the warmer, star-closer parts of the disc, rocky planets begin to form. After the development of the icy giants, there is not much gas left for the terrestrial planets to accrete. Therefore, let's go back in time more than 4.6 billion years to the period before the Earth, Sun, and even the Solar System were created. Dust and gas were all around us called supernova.
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A 0.500-kilogram cart traveling to the right on a horizontal, frictionless surface at 2.20 meters per second collides head on with a 0.800-kilogram cart moving to the left at 1.80 meters per second. What is the magnitude of the total momentum of the two-cart system after the collision
The magnitude of the total momentum of the two-cart system after the collision is 2.54 Kg.m/s
How do I determine the magnitude of the total momentum after collision?Momentum is defined as the product of mass and velocity. It is expressed mathematically as:
Momentum = mass × velocity
For a two separate system colliding, the momentum is given as:
Total momentum before collision = Total momentum after collision
First, we shall determine the momentum of each cart. This is shown below:
For 1st cart:
Mass of 1st cart = 0.5 KgVelocity of 1st cart = 2.20 m/sMomentum of 1st cart =?Momentum = mass × velocity
Momentum of 1st cart = 0.5 × 2.2
Momentum of 1st cart = 1.1 Kg.m/s
For 2nd cart:
Mass of 2nd cart = 0.8 KgVelocity of 2nd cart = 1.80 m/sMomentum of 2nd cart =?Momentum = mass × velocity
Momentum of 2nd cart = 0.8 × 1.8
Momentum of 2nd cart = 1.44 Kg.m/s
Finally, we shall magnitude of the total momentum after collision. Details below:
Momentum of 1st cart = 1.1 Kg.m/sMomentum of 2nd cart = 1.44 Kg.m/sTotal momentum after collision =?Total momentum after collision = Momentum of 1st cart + Momentum of 2nd cart
Total momentum after collision = 1.1 + 1.44
Total momentum after collision = 2.54 Kg.m/s
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If the mass of ball b triples, its new momentum is kg • .
Momentum of an object is linked to its mass, m and velocity, v. The product of mass and velocity of an object is termed as its momentum. If any of these group (mass or velocity or both) changes, object's momentum will change.
In the given problem, the mass triples, i.e., new mass is 3m. Nothing is raised about its velocity (except that it increases). Let to assume that if it also triples, i.e., new velocity is 3v.
Hence, the new momentum of the body is given by 3m x 3v = 9 mv. That is the momentum changes by a factor of 9, the final momentum is 9 times the real momentum. Likewise, any other change in mass or velocity or both can be used to determine the change in momentum.
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The image below shows a convex lens and incident light rays. Incident Rays What will happen to the light after it passes through the lens? O A. The light rays will emerge parallel to form an image. OB. The light rays will converge to form an image. OC. The light rays will diverge and will not form an image. O D. The light rays will converge and will not form an image.
Answer:
(B) the light rays will converge to form an image
If sunlight were green instead of white, the most comfortable color to wear on a hot day would be a. blue b. green c. black d. white
If sunlight were green, then green would be the most comfortable color to wear on a hot day. This is option b.
We know that sunlight is white because our Sun is white. Some objects will reflect most of the colors in the sunlight, which would make them appear white or pale. Some will absorb most of the colors and this would make them appear black or dark. On a hot day, white clothes reflect sunlight the most so they will be more comfortable to wear.
A red rose, for instance, is red because it reflects red color and absorbs the remaining colors.
Imagine that sunlight were green instead of white. A green object would reflect most colors while a red (the opposite color of green) object would instead absorb most colors in the sunlight. Therefore, the most comfortable color to wear on a hot day would be green if sunlight were green.
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What are 3 examples of concave mirrors?
These are the three instances of concave mirrors: 1 Mirrors for shaving. two head mirrors Opthalmoscope 3
Which concave mirror examples come to mind?Concave mirrors include torchlights and auto headlights. Convex mirrors are found in magnifying glasses and telescopes, for example.
What are the concave mirror's 5 applications?Concave mirrors are used in many different applications, such as satellite dishes, cutting mirrors, dental mirrors, and searchlights. The concave mirrors have the ability to collimate and concentrate light rays. In headlights and torches, concave mirrors are utilized as just a light beam reflector.
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If the object is located far (many focal lengths) from the lens, the image will appear at a. the focal point b. the negative focal point c. no image will form
The picture will appear at the focal point if the object is far away from the lens (several focal lengths). The right response is option A. How strongly is determined by the focal length of an optical system.
The system either converges or diverges light; this is the opposite of the optical power of the system. A system's light converges when the focal length is positive, while it diverges when the focal length is negative. optical system is a more recent secondary storage medium than magnetic memory. It has shown to be a promising random medium for high-capacity secondary storage since it can fit a lot of text and data into a small amount of space. A rotating disc is the main component of an optical-disk storage system.
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A student rolls a marble on two different surfaces with the same force. The table shows the distance travelled in each trial.
Why does the marble travel a greater distance on glossy paper but not on sandpaper?
a) Because the mass of the marble on sandpaper is high.
b) Because the mass of the marble on glossy paper is high.
c) Because interlocking between the surface of marble and sandpaper is high.
d) Because interlocking between the surface of marble and glossy paper is high.
Answer:
Option C, because interlocking between the surface of the marble and sandpaper is high.
Explanation:
The distance an object travels relies on the force, mass, and friction imposed on the thing. Since the force and mass is constant, friction is the only variable that changes.
Rougher surfaces, such as sandpaper, have little bumps and grooves that increase the amount of kinetic (motion-related) friction an object can have, thus decreasing the distance as the more significant the friction, the more force an object needs to move the same distance.
Since mass is constant, A and B are eliminated. Glossy paper has a smooth surface, so interlocking is minimal; therefore, Option D can also be eliminated.
That leaves Option C.
at the bottom of the ride, what is the vector force exerted by the seat on the rider?
The vector force exerted by the seat on the rider is 749.12j N or (0 , 749.12 , 0).
The full question is in the attachment. At the bottom of the ride forces that work on the seat.
The normal force (N) to the center of the Ferris wheel.The weight force (w) to the center of the earth.The Ferris wheel move in a circular motion, so centripetal force works in the seat.In y-axis
N - w = Fc
N - mg = mω²R
R = the radius = 10 mm = the rider mass = 56 kgg = the acceleration due to gravity = 9.8 m/s²Going around once in t = 10.5 sN - mg = mω²R
N - (56 × 9.8) = 56 × 0.598² × 10
N - 548.8 = 560 × 0.358
N = 200.322 + 548.8
N = 749.122 Newton
In vector
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A 2.0 kg object traveling to the right at 6.0 m/s collides head on with a
second 4.0 kg object traveling left at 6.0 m/s. After the collision, the 4.0 kg
object is traveling right at 2.0 m/s. What is the speed of the 2.0 kg object?
Elastic or inelastic?
This is an inelastic collision because some kinetic energy is lost during the collision.
In order to determine the speed of the 2.0 kg object after the collision, we need to use the conservation of momentum.
The total momentum before the collision is (2.0 kg)(6.0 m/s) + (4.0 kg)(-6.0 m/s) = -12.0 kg*m/s.
The total momentum after the collision is (2.0 kg)(v) + (4.0 kg)(2.0 m/s) = 0, where v is the speed of the 2.0 kg object after the collision.
Solving for v, we find that v = 3.0 m/s. Therefore, the speed of the 2.0 kg object after the collision is 3.0 m/s.
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when light travels from glass to air, what can be said about the properties of the em wave?
When Light travel from glass to air. then, its speed and wavelength will increase while the frequency of EM wave remain same.
What is EM wave ?Electricity and magnetism are both related to electromagnetic (EM) waves. These waves are formed of magnetic and electric fields that change over time and travel through space.
Describe Properties of EM wave?Below are some important properties :
The nature of electromagnetic waves is transverse.They move by changing the electric and magnetic fields so that they are perpendicular to one another and perpendicular to the direction in which the wave is moving.In a vacuum, electromagnetic waves move at a constant speed. The waves move at a pace of 3 x 10^8 m/s.Non-mechanical waves include electromagnetic waves. They can spread without the aid of any material medium.They follow the formula c = fλ. The wavelength in metres and the frequency in Hertz are both used here. The speed of light, 3 x 10^8 m/s, is equivalent to a constant c, which is the product of wavelength and frequency. We may deduce that electromagnetic waves will move at the speed of light regardless of their wavelength and frequency from the relationship between their frequency, wavelength, and speed of light.The magnetic field and the oscillating electric field are in phase with one another. The wave's velocity is equal to the product of the electric field and magnetic field amplitudes.By using the following properties we can see that its speed and wavelength will increase and its frequency will remain same.
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If an object only absorbs blue light how would it appear in white light?
An object is illuminated by red, green, and blue light if it is illuminated by white light. Only red and green light will be reflected from an item if it absorbs blue light.
In white light, how does the blue item appear?White light causes an object to seem blue because it reflects only blue light and absorbs all other colors. Since there is no color to reflect when that object is placed in red light, it absorbs all of the red light that strikes it and appears black.
Why does white light make a blue shirt look blue?We mostly notice colors in reflected light. The room's variously colored objects reflect some of the white light while absorbing the rest. A blue shirt shows that white light contains blue light because blue wavelengths are reflected by blue and are absorbed by blue.
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your internal body temperature goes up and down with the temperature outside instead of holding steady at 98.6 degrees f. question 4 options: true false
True if Your hypothalamus controls your body temperature keeping it within one or two degrees of 98.6 degrees, much like a thermostat controls the temperature inside your home.
The usual body temperature is what?Body temperature is 98.6 F on average (37 C). However, the average body temperature might be anywhere from 97 F (36.1 C) to 99 F (37.2 C) or higher. Depending on the time of day or how busy you are, your body temperature may change. In general, elderly people's body temperatures are lower than those of younger people.
What temperature is 37?Your body temperature is usually around 37 °C. When your body temperature is 37.8°C or greater, you typically have a fever. You might feel hot, cold, or shaky. By taking your temperature using a thermometer, you can determine whether you have a fever.
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If you wax the hood of a car, when it rains, the raindrops do not stick to the car. Instead, they BEAD UP on the car (bonding with other water molecules) due to ___.
A.) surface tension
B.)cohesion
C.)specific heat
D.)adhesion
If you wax the hood of a car, when it rains, the raindrops do not stick to the car. Instead, they BEAD UP on the car (bonding with other water molecules) due to adhesion. So the correct option is D.
What is adhesion?Adhesion is a property in which a substance with the same properties will unite when they come into contact, staying attached by the force of intermolecular bonds.
As in the example, the water molecules are going to be in an environment where the wax molecules are going to have neutral charges, they are going to be more potentiated to unite with each other due to their different positive and negative charges, which will make them unite closely. This will then cause the water molecules to join together to form water droplets on the surface of the car instead of just spreading.
Therefore, we can confirm that the correct option is D. adhesion.
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If you do work on a skateboard loaded with friends in one-third the usual time, you expend A) three times the usual power. B) the usual power.
C) one third as much power. D) need more information
If you do work on a skateboard loaded with friends in one-third the usual time, you expend A) three times the usual power.
Is energy a moving object?Kinetic energy is the energy that an item has as a result of its movement. If we wish to accelerate an item, we must apply force to it. Using force demands us to put in effort. Gravity does no work on a bowling ball that is resting or moving on a bowling alley since gravity works perpendicular to the surface.
Matter particles are always moving, according to the kinetic hypothesis. Kinetic energy is the energy of motion. Solid particles have the least kinetic energy, while gas particles have the greatest.
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If the maximum tractive effort of a vehicle is 450 lb and the engine generated tractive effort is 425 lb, then the available tractive effort is
If the maximum tractive effort of a vehicle is 450 lb and the engine generated tractive effort is 425 lb, then the available tractive effort is 450 lb.
The maximum tractive effort of a vehicle is the maximum amount of force that the vehicle can apply to the ground to generate traction and move forward. The engine generated tractive effort is the amount of force that the vehicle's engine can produce to move the vehicle. The available tractive effort is the amount of force that the vehicle can actually use to move forward, and it is determined by the maximum tractive effort of the vehicle. In this case, the available tractive effort is 450 lb, which is the maximum tractive effort of the vehicle.
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the region enclosed by both of the cardioid r=1+cos(theta) and r=1-cos(theta)
The equation of the cardioid is r = a(1 + cos(θ)), where a is the distance of the center of the cardioid from the origin.
In this case, the two equations given are r = 1 + cos(θ) and r = 1 - cos(θ), which are the equations of two cardioids with the same center at the origin.
The first equation, r = 1 + cos(θ), represents the outer cardioid, and the second equation, r = 1 - cos(θ), represents the inner cardioid. The region enclosed by these two cardioids is the area between the two curves, which is the space between the outer and inner cardioids.
This region is symmetric about the x-axis, as the equations are symmetric about the x-axis. The region is infinite as the equations are defined for all real values of θ.
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a wave travels an average distance of 1 m in 1 s with a frequency of 1 hz. its amplitude is
A wave travels an average distance of 1 m in 1 s with a frequency of 1 hz. its amplitude is not enough information.
Definition of AmplitudeThe amplitude is the deviation that is farthest from the equilibrium point in vibrations.
In the international system, the amplitude is symbolized by (A) and has units (M).
amplitude is a scalar measurement of the magnitude of the oscillation of a wave.
We can also interpret this term as the farthest distance from the equilibrium line in a sine wave so that the amplitude is the maximum displacement from the equilibrium point.
The amplitude determines how loud or weak a sound is. The greater the energy emitted by the sound source, the stronger the sound will be heard.
Vibration Amplitude Quantification MethodThere are several quantification methods that you must understand in studying amplitude. The following is an explanation of the vibration amplitude quantification method:
1. Peak to Peak Value
The peak-to-peak amplitude value is very important because it will indicate the maximum excursion of a wave.
This quantity is very useful, such as for knowing the displacement of a machine part due to motion which is important for calculating the material stress of a machine.
2. Peak Value
Peak values are very useful for indicating the level of short duration shocks. However, the peak value will only indicate the maximum level of vibration that occurs at a certain point in time.
3. Average Value
The average amplitude value calculates the movement based on a certain period in the outline. However, this is considered to have a limited function because the calculation of negative sinusoidal values seems to negate.
4. Root Mean Square (RMS) Value
This is the most appropriate calculation for calculating the amplitude. This can happen because the root mean square value will take into account time and squaring negative values in sinusoidal vibrations so as to provide a more accurate amplitude value.
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if you are about to pass a bicycle to your immediate right and an oncoming vehicle is approaching you on your immediate left, what should you do?
When you are going to pass the bicycle and a car is coming from behind, slow down and allow the car go in front of you so that there is more space for the bicycle to accelerate.
What does acceleration mean?Acceleration is the rate at which speed changes.Therefore, even though an object is moving in a circular route, its velocity direction is changing, and it is continuing to accelerate.
the acceleration formula in detail.Kinetic friction (a) is the result of the combination of the change in velocity (v) as well as the change in time (t) based on the equation a = v/t (t). This allows you to compute the rate of change of velocity in terms metric kilometers per minute squared (m/s2).
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A nuclear power plant had a massive spill. Before cleanup begins, it must first be inspected by professionals who can determine dangers posed by the spill. The professionals who are best equipped for inspecting the facility would have careers in
environmental services.
plant systems.
animal systems.
power, structural, and technical services.
Answer:
The professionals who are best equipped for inspecting a nuclear power plant after a spill would likely have careers in power, structural, and technical services, as well as environmental services. These professionals would have the necessary expertise to assess the damage to the facility and identify any potential hazards posed by the spill. They may also be able to recommend appropriate cleanup measures and work with local authorities to ensure that the facility is safe for workers and the public.
Explanation:
3. Which property of electromagnetie waves must go down as the frequency goes up?
Answer:
Explanation:The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
in order to cover such large expanses of seafloor, shield volcanoes erupt ________ lava.
"In order to cover such large expanses of seafloor, shield volcanoes erupt basaltic lava."
Around the island of Hawaii, there are two largest active volcanoes in the world, towering more than 9 km above the ocean's surface.
The majority of basaltic and andesitic lava flows that make up shield volcanoes were quite fluid when they erupted. They were created by numerous eruptions that took place intermittently over extremely long periods of time.
Basaltic lava can easily and quickly travel more than 20 kilometres from a vent. Volcanic gases can usually escape due to the low viscosity without producing large eruption columns. However, basaltic lava fountains and fissure eruptions continue to produce towering, explosive fountains.
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Assuming the mass of an average cell is ten times the mass of a bacterium (which is 10-15 kg): Part (a) Calculate the number of cells in a hummingbird, assuming it has a mass of 10-2 kg.
In accordance with the information provided, a hummingbird has 10¹² cells and In a person, there are cells that total 10¹⁶ cells.
In physics, what do mass and weight mean?A measurement of an object's inertial attribute, or how much matter it contains, is the object's mass. The force of gravity acting on an object or the force required to maintain it is measured by the weight of the thing. An object experiences a negative value of 9.8 m/s² due to the force of microgravity on the earth.
Mass of cell = 10*10⁻¹⁵ = 10⁻¹⁴ kg
Mass of hummingbird = 10⁻² kg
Mass of human = 10² kg
Number of cells is given by
n = Mass of hummingbird/Mass of cell
n = 10⁻²/10⁻¹⁴
n = 10¹² cells
A hummingbird has cells with a total number of 10¹² cells.
n = Mass of human/ Mass of cell
n = 10²/10⁻¹⁴
n = 10¹⁶ cells.
In a person, there are cells that total 10¹⁶ cells.
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The complete question is-
Assuming the mass of an average cell is ten times the mass of a bacterium (which is 10⁻¹⁵ kg):(a) Calculate the number of cells in a hummingbird, assuming it weighs 10⁻² kg. (b) Calculate the number of cells in a human assuming the mass of the person is 10² kg.
Zoe is setting up a track for a toy car. The track has a ramp that is 32° above horizontal. If Zoe wants the car to travel as a projectile for 1.0 seconds, how fast does the toy car need to be moving as it leaves the ramp?
Answer:
The toy car needs to be moving at approximately -8.2 m/s in the x direction and -4.9 m/s in the y direction as it leaves the ramp.
Explanation:
To solve this problem, you will need to use the equations of motion for a projectile. The equations are as follows:
x = x0 + v0x * t
y = y0 + v0y * t - (1/2) * g * t^2
where x and y are the horizontal and vertical positions of the projectile, x0 and y0 are the initial positions, v0x and v0y are the initial velocities in the x and y directions, t is the time, and g is the acceleration due to gravity (9.8 m/s^2).
In this case, we are given that the track has a ramp that is 32° above horizontal, and we want to find the initial velocity of the toy car. We can use the equation for y to solve for the initial velocity in the y direction (v0y). We are given that the toy car will be traveling as a projectile for 1.0 seconds, and we can assume that the initial position (y0) is 0 and the acceleration due to gravity (g) is 9.8 m/s^2. We can rearrange the equation to solve for v0y:
v0y = (y - y0 - (1/2) * g * t^2) / t
Substituting in the given values, we get:
v0y = (0 - 0 - (1/2) * 9.8 * 1^2) / 1
v0y = -4.9 m/s
Now that we have the initial velocity in the y direction, we can use the equation for x to solve for the initial velocity in the x direction (v0x). We are given that the ramp is 32° above horizontal, so we can use trigonometry to find the initial velocity in the x direction. The tangent of 32° is approximately 0.6, so we can use the following equation to solve for v0x:
v0x = v0y / tan(32°)
Substituting in the value for v0y that we found earlier, we get:
v0x = -4.9 / 0.6
v0x = -8.2 m/s
So, to answer the question, the toy car needs to be moving at approximately -8.2 m/s in the x direction and -4.9 m/s in the y direction as it leaves the ramp.
A bullet of mass 0.00163 kg and speed v passes completely through a pendulum bob of mass 95 kg. The bullet emerges with a speed v/2. The pendulum bob is suspended by a stiff rod of length 0.777 m and negligible mass. The acceleration of gravity is 9.8 m/s 2 . v v/2 M l What is the minimum value of v such that the pendulum bob will barely swing through a complete vertical circle
The minimum value of v such that the pendulum bob will barely swing through a complete vertical circle is 6.2 x 10^5m/s.
Given the mass of bullet (m) = 0.00163kg
Initial speed of bullet = v
mass of pendulum (m2) = 95kg
Initial velocity of pendulum bob = 0m/s
Let final velocity of bob = v1
Final speed of bullet after passing through pendulum = v/2
length of rod of pendulum (L) = 0.777m
acceleration of gravity (g) = 9.8m/s^2
We know that the energy is conserved at every point of motion. So final velocity of pendulum bob is 0m/s as will barely swing through a complete vertical circle.
Therefore Kinetic Energy (KE) = Potential Energy (PE)
0 + 1/2m2v1^2 = m2gh where h is height of pendulum = 2L in a full circle
1/2 x 95 x v1^2 = 95 x 9.8 x 2 x 0.777
v1 = 2 x √7.6146 = 2 x 2.7 = 5.4m/s
Applying conservation of momentum for bob and bullet, we get
Pi = Pf such that m1v + 0 = m1v/2 + m2v1
m1v/2 = m2v1
v = m2 x v1 x 2 / m1 = 95 x 5.4 x 2/0.00163 = 6.2 x 10^5m/s
Hence the minimum value of v such that the pendulum bob will barely swing through a complete vertical circle is 6.2 x 10^5m/s
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The speed of the pendulum bob must be at least 6.2 x 105 m/s in order for it to barely complete a vertical circle.
What is the pendulum's bob's speed as it passes through its lowest point?Gravity transforms the potential energy of the pendulum as it swings downhill into kinetic energy, leaving the pendulum bob with only its kinetic energy at the bottom of the swing.
Considering that a bullet weighs (m) 0.00163 kg
Initial bullet velocity = 95 kg pendulum mass (m2)
Bob's initial speed is 0 meters per second.
Let bob's final speed be equal to v1.
Final speed of the bullet after passing through the pendulum is equal to v/2 length of the pendulum rod (L) is equal to 0.777m acceleration of gravity (g) is equal to 9.8m/s2.
We are aware that energy is stored.Therefore, Kinetic Energy (KE) = Potential Energy (PE) 0 + 1/2m2v12 = m2gh, where h is the height of the pendulum, which is equal to 2L in a full circle.
By using the conservation of momentum for the bob and the bullet, we arrive to the equation Pi = Pf, where m1v + 0 = m1v/2 + m2v1 m1v/2 = m2v1 v = m2 x v1 x 2 / m1 = 95 x 5.4 x 2/0.00163 = 6.2 x 105m/s.
Therefore, 6.2 x 105 m/s is the lowest value of v at which the pendulum bob will just about complete a vertical circle.
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what is the power, pr(t), flowing into the resistor, r, at time t?
The power p(t) flowing into the resistor with resistance r and at time t is given as I₀² R e⁻(2Rt/L) and -I₀² R e⁻(2Rt/L).
L di/dt + iR = 0 - Rt/L = I = I₀ e
At t = 0, I = I₀
P = I² R = I₀² R e⁻(2Rt/L)
Energy of the inductor = 1/2 L I² = 1/2 L I₀² R e⁻(2Rt/L)
Power P(t) = dE/dt = d/dt (1/2 LI₀² e⁻(2Rt/L))
= 1/2 t I₀² ( e⁻(2Rt/L)) e⁻(2Rt/L)
P(t) = - I₀²R e⁻(2Rt/L)
Thus, the power flowing into the resistor with resistance r and at time t is given as I₀² R e⁻(2Rt/L) and -I₀² R e⁻(2Rt/L).
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KV
cover
From the top of a tower, a ball is thrown vertically upwards. When the ball reaches h below the tower, its
speed is double of what it was at height h above the tower. Find the greatest height attained by the ball from
the tower.
It’s a Kinematics 1d question
A ball is thrown vertically upwards. The ball's speed then reaches double of what it was at height h above the tower when it reaches h below the tower. The ball can jump from the tower up to a height of 3h.
What does physics kinematics mean?The study of motion in a system of bodies is called kinematics, which does not directly take into account the forces or potential fields influencing the motion. In other terms, kinematics investigates how momentum and energy are distributed among interacting bodies.
What does kinematics serve as a tool for?The goal of kinematics is to provide a description of the spatial positions of bodies or systems of material particles, as well as the speeds and velocities of those particles (acceleration).
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When a light ray moves from air into glass, which has a higher index of refraction, its path is A) bent toward the normal. B) parallel to the normal. C) bent away from the normal. D) do not bent.
The correct answer is A) bent toward the normal. When a light ray moves from air into glass, which has a higher index of refraction, its path will be bent toward the normal. This is due to the fact that light travels more slowly in glass than in air and thus is bent at the interface between the two materials.
When a light ray passes from one medium to another, it can be refracted, or bent. This is due to the fact that the speed of light varies depending on the medium it is travelling through. When a light ray moves from a medium with a lower index of refraction, such as air, to a medium with a higher index of refraction, such as glass, its path will be bent toward the normal. This phenomenon is known as refraction, and it is an important part of optics and optical systems.
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How much power is generated by a force of 49.2 N pulling a box at a velocity of 11.88 m/s?
Power is generated by a force of 49.2N pulling a box at a velocity of 11.88m/s is equal to 584.5 W.
What is power?The power can be described as the rate of doing work and is equal to the work done per unit of time. The SI unit of measurement of the power joules per second (J/s) or Watt (W).
Power can be defined as a time-based quantity and the rate at which work is done upon a body. The mathematical formula for power can be expressed as shown below.
Power = Work/time
P = W/t
The Power can also be represented as P = F.v
Given, the force applied on the box, F = 49.2 N
The velocity of the box after applying force, v = 11.88 m/s
The power generated by force, P = F.v
P = 49.2 × 11.88
P = 584.5 W
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What was the longitude problem?
The longitude problem is that the longitude shifts one degree every four minutes, especially at sea. So, it was considered a problem for sailors for centuries.
To solve the Longitude problem, Harrison planned to design a portable clock that would keep the time in three seconds a day. This would make it far more accurate than the best watches of the time. John Harrison arrives in London, seeking the support and imbalance promised by the Longitude Act of 1714.
Harrison proudly brought it to London in 1735. It was installed in Graham's workshop, to be shown to the London scientific community. Finally, a timekeeper with which to determine longitude at sea. Due to the two interconnected swinging balances of the clock, it is unaffected by the motion of the ship and is essentially a portable version of the Harrison precision wooden clock.
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When rocks fall from a cliff or outcrop and form a pile of broken rocks at the base of the cliff, this pile is called a
Yes. The pile of broken rocks at the base of a cliff or outcrop that has been formed by rocks falling from the cliff is known as a talus slope or talus pile.
Talus slopes are formed as a result of:
erosionweatheringgravitycan be found in many different geological settings.Talus slopes can be dangerous, as they are unstable and can collapse without warning.
This highlights the importance of being aware of the risks of talus slopes and taking appropriate safety precautions when near them. Additionally, the formation of talus slopes is an example of the natural processes that shape the Earth, and can help us better understand the geology of a particular area.
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