If a comet flies over 50,000 km/h for four hours how far has a travel?

Answer:True

Explanation:

0.278 m when a load of 0.300 kg hangs from it, and 0.750 m when a mass of 3.22 kg hangs from it, a spring will exert 29.4 N/m of force.

K stands for the proportionality constant, commonly referred to as the "spring constant." In layman's words, stiffness and strength are shown by the k variable in Hooke's law (F = -kx). An object requires more force to be stretched to a specific length the greater the value of k.

The electrostatic constant, also known as the Coulomb constant, electric force constant, or K, is a proportionality constant in electrostatics equations. It is equivalent to 8.9875517923(14)109 kgm3s4A2 in SI base units.

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B. magnitude and direction.

When two forces of equal size are working in opposite directions—one in the east and one in the west—the results of the two pressures are not the same.Therefore, the magnitude and direction should be provided in order to accurately characterize a force.

We can define force as that of the push or pull on an item with a certain magnitude and direction as we know that what a push or a pull indeed has magnitude and direction (hence, it is vector quantity).

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Answer:   B

Explanation:

Power of light bulb: 0.100 kW = (0.100 x 1000) W

                                                  = 100W (remember to convert to W, not kW)

Next, apply the formula Power = Voltage^2 / R

Voltage is given in the question to be 120V

Hence, 100 = 120^2/R

             100 = 14400/R

              R = 14400/100 ohm

              R = 144 ohm

Before backing up your vehicle, you should look to the front, sides, and rear, and continue to look to the rear while backing.

When you are backing up, you have to turn your head so that you can see above the head restraint. When you are backing up, you should not rely just on the mirrors. When one is backing up a vehicle and using mirrors to direct the vehicle, one's depth perception is impaired.

Because it is harder to keep steering control and the vehicle's balance when the car is in reverse, you should always back at low speeds. Because the reverse gear is more powerful than the driving gear, you should only press the accelerator pedal with extreme caution, if at all. If you don't slow down, your car will drive much too quickly.

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The maximum possible angle for the ladder not to slip is calculated to be 48°.

Given that,

Coefficient of friction = 0.45

Mass of the ladder = m

Length of ladder = L

Vertical force = m g

Horizontal force = μ m g

As the ladder is stable, moment is taken as zero.

So,

μ × m g L × sin θ - (m g L)/2 cos θ = 0

tan θ = 1/2 μ = 1/2 × 0.45 = 0.225

tan θ = 0.225

θ =  48°

The required maximum possible angle for the ladder not to slip is calculated to be 48°.

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9.6 iˆ− 8.9 kˆis the force as a function of time.

At this point, describing a force as a push or a pull is perfectly acceptable. There is no such thing as a force that an object "has in it" or "contains." A force is applied to one thing by another. The idea of a force encompasses both living and non-living things.  A force has the ability to alter or increase the velocity of a massed object. A simple way to express force is with a push or a pull.. The fact that a force has both a magnitude and a direction makes it a vector quantity.

Contact forces and remote action There are two distinct kind of forces. Your consistent use of force is obvious. Push and pull are basically forces. When you push or pull against an object, you apply force to it.

p = 4.8 t²iˆ− 8.0jˆ− 8.9tkˆ

F = dp/dt

F = 9.6 t iˆ− 0 jˆ− 8.9 kˆ

F = 9.6 iˆ− 8.9 kˆ

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The porosity of the silt sample is 39.75% which is the sediment volume for each sample, 400ml. The correct option is b.

Silt is a granular material of a size between sand and clay and is composed mostly of broken grains of quartz. Silt may occur as soil often mixed with sand or clay or as sediment mixed in suspension with water. Silt usually has a floury feel when dry, and lacks plasticity when wet. Silt also can be felt by the tongue as granular when placed on the front teeth even when mixed with clay particles.

Silt is a common material, making up 45% of average modern mud.

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Water is drawn from a large tank to a low-lying tank using a rubber tube by suc-king on the end of the rubber tube below the tank, thus, creating a low-pressure area at the end of the tube. The pressure difference between the ends of the robber tube will cause water to be forced out of the tube by atmospheric pressure.

The process of siphoning water is the process by which the end of a tube or siphon is suc-ked so as to reduce the air pressure there causing water to rush into and out of the siphon at the lower pressure end.

Siphoning is employed when water is drawn from a large tank to a low-lying tank using a rubber tube

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The escape velocity for the Sun is "6.18 x 10⁵ m/s".

The terms kinetic energy, escape velocity, and rms speed are all relevant to this query.

a) The hydrogen atom's rms speed at 5800 K is "11991 m/s." b) The Sun's escape velocity is 6.18 x 105 m/s.

a) To calculate the hydrogen atom's rms speed, we shall utilize the formula for the average kinetic energy of gas molecules. The root mean square speed of an atom is rms speed.

Where v=rms speed = and K = Boltzman's constant = 1.38 x 10-23 J/k, K.E = 1/2mv2 v = 3KT m

1.67 x 10-27 kg is the mass of an atom of hydrogen at absolute zero temperature, or T = 5800 k.

The resulting equation is 3(1.38 a 10-23 J/k) (5800 k) 1.67 10-27 kg v = 11991 m/s.

The following equation yields the Sun's escape velocity:

Ve= 2GM R in which ve = escape velocity equals?

G is equal to 6.673 x 10-" N.m2/kg2 (gravitational constant).

M = Sun's mass, which is 1.99 x 10^30 kg

Sun's radius is 6.96 x 10⁸ meters, thus R

In light of this, 2(6.673 10-11 N.m2/kg2) (1.99 x 1030 kg) 6.96 108 m Ve= Ve = 6.18 x 10^5 m/s

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The electric field inside the dome of a highly-charged van de graaff generator is high voltage current.

The number of charges that pass a given point each second. Just like water flow in a pipe: How much water passes a point each second is defined as current In the flashlight circuit, electrons flow from the negative terminal of the battery to the positive terminal.  

The direction of the current, I, is just the opposite: from the positive terminal to the negative terminal. Typical path of an electron as it bounces off atoms in a metal wire. Because of the tortuous path the electron follows, its average velocity is rather small.

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The refractive index of glass with respect to air is 1.5.

The refractive index or index of refraction is the measure of the bending of a ray of light when passing from one medium into another. It can also be defined as the ratio of the velocity of a light ray in an empty space to the velocity of light in a substance. Refractive index of medium B with respect to medium A is given by

n = Speed of light in medium A/ Speed of light in medium B

when light travels from medium A to medium B. Hence, the refractive index of glass with respect to air is given by

n = Speed of light in air/ Speed of light in glass

Based on the provided information,

Speed of light in air = 3 x 10^8 m/s

Speed of light in glass = 2 x 10^8 m/s

Hence, the refraction index of glass is

n = 3 x 10^8/ 2 x 10^8 = 1.5

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The magnitude of the Moon's acceleration is 0.0065 m/s².

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

The force by Earth on the Moon, [tex]F_{EM[/tex] = 1.98 ×10²⁰N

The force by the Sun on the Moon, [tex]F_{SM[/tex] =  4.36  ×10²⁰N

As they are acting at 90°, the magnitude of net force =

√{(1.98×10²⁰)²+(4.36×10²⁰)²}  ×10²⁰N.

= 4.788 ×10²⁰ N.

The mass of the Moon is 7.35 × 10²² kg.

Hence,  the magnitude of the Moon's acceleration = 4.788 ×10²⁰ N/ 7.35 × 10²² kg.

= 0.0065 m/s²

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Answer:

25 s

Explanation:

AVERAGE velocity = (50 - 0 ) / 2 = 25 m/s

1250 m / 50 m/s = 25 seconds

The conservation of angular momentum, because as her arms move by, her overall rotational indolence is lowered, thus adding her angular speed. This principle explains the increase in speed in the given question.

Angular momentum is defined as the property of any rotating object given by moment of indolence times angular haste. It's the property of a rotating body given by the product of the moment of indolence and the angular haste of the rotating object.

Conservation of angular momentum is a physical property of a spinning system similar that its spin remains constant unless it's acted upon by an external necklace; put another way, the speed of gyration is constant as long as net necklace is zero.

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Answer:

Electrical energy is transferred from the wall socket to the computer. Electrical energy is transformed to sound and light energy when the computer is turned on. Electrical energy is transformed to heat energy when the computer stays on.

The amplitude of the harmonic oscillator after 20s is calculated to be 32 cm.

Amplitude is defined as the the maximum displacement from equilibrium.  Amplitude of a wave is taken as the distance from the center line to the top of a crest or to the bottom of a trough .

Given, At =  40 cm at 10 s

Given, Ao = 60 cm and time, t = 10

Formula for amplitude is :

At = Ao (e^t/τ)

40 = 60 e^10/τ

ln 2/3 = 10/τ

τ = 24.66

A20 s = 60 e ^(2-/24.66)

A20 s = 32 cm

The amplitude of the harmonic oscillator after 20 s is 32 cm.

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The speed of the train that is 110 meters long and crosses a pole in 12 seconds is 36.67km/hr.

Speed is the rate of motion or action, specifically the magnitude of the velocity or the rate of distance traversed in a given time.

The speed of a moving object can be calculated by dividing the distance moved by the time taken as follows:

Speed = distance/time

According to this question, a 110 meters long train crosses a pole in 12 seconds.

110metres = 0.110kilometers

12 seconds = 0.00333333 hours

Speed = 0.110km ÷ 0.003hr

Speed = 36.67km/hr

Therefore, 36.67km/hr is the speed of the train

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A wire loop with an initial 8.3 cm diameter is pointed directly at such a 1.5 T magnetic field. The loop's average induced emf is o.29 v.

electromagnetic radiation-induced electric and magnetic forces. Researchers are examining whether the electromagnetic fields (EMFs) produced by electrical equipment, wireless and cellular cellphones, and power lines can result in cancer or other negative health effects. likewise known as electromagnetic field.

Non-ionizing EMFs can come from both natural and man-made sources. One examples of a naturally present EMF is the global magnetic field, which makes the compass needle point north. That both ELF and RF categories of the non-ionizing portion of the spectrum apply to human-made EMFs.

∈εc = - (ΔΦ-θ)/Δt

= - (ABΔcos⁡θ)/Δt

= - (π(0.110 m)² 1.5 T(cos⁡90^∘-cos⁡0^∘)/(0.20 s)

= - (π(0.110 m)² 1.5 T(0-1) /(0.20s)

avg. emf = 0.29 V

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Answer:

Approximately [tex]3.46 \times 10^{8}\; {\rm m}[/tex], assuming that the astronauts are travelling along a straight line between the Earth and the Moon.

Approximately [tex]3.34 \times 10^{-3}\; {\rm m\cdot s^{-2}}[/tex].

Explanation:

Let [tex]r[/tex] denote the distance (in meters) between the astronaut and the center of the Earth. Under the assumptions, the distance between the astronaut and the Moon would be [tex](3.84 \times 10^{8} - r)[/tex] meters.

Let [tex]G[/tex] denote the universal gravitational constant. Let [tex]m[/tex] denote the mass of the astronauts. Magnitude of the gravitational attraction from the Earth would be:

[tex]\begin{aligned}\frac{G\, m\, M_\text{earth}}{r^{2}}\end{aligned}[/tex].

Magnitude of the gravitational attraction from the Moon would be:

[tex]\begin{aligned}\frac{G\, m\, M_\text{moon}}{(3.84 \times 10^{8} - r)^{2}}\end{aligned}[/tex].

Equate the two expressions and solve for the distance [tex]r[/tex]:

[tex]\begin{aligned}\frac{G\, m\, M_\text{earth}}{r^{2}} = \frac{G\, m\, M_\text{moon}}{(3.84 \times 10^{8} - r)^{2}}\end{aligned}[/tex].

[tex]\begin{aligned}\frac{(3.84 \times 10^{8} - r)^{2}}{r^{2}} = \frac{G\, m\, M_\text{moon}}{G\, m\, M_\text{earth}}\end{aligned}[/tex].

[tex]\begin{aligned}\frac{3.84 \times 10^{8} - r}{r} &= \sqrt{\frac{M_\text{moon}}{M_\text{earth}}} \\ &= \sqrt{\frac{5.98 \times 10^{24}\; {\rm kg}}{7.36 \times 10^{22}\; {\rm kg}}}\end{aligned}[/tex].

[tex]\begin{aligned}r &= \frac{3.84 \times 10^{8}\; {\rm m}}{\displaystyle 1 + \sqrt{\frac{5.98 \times 10^{24}\; {\rm kg}}{7.36 \times 10^{22}\; {\rm kg}}}} \approx 3.45653\times 10^{8}\; {\rm m}\end{aligned}[/tex].

In other words, the distance between the astronaut and the center of the Earth should be approximately [tex]3.46 \times 10^{8}\; {\rm m}[/tex].

At [tex]r \approx 3.45653\times 10^{8}\; {\rm m}[/tex] from the center of the Earth, the gravitational field strength of the Earth would be:

[tex]\begin{aligned}g &= \frac{G\, M_{\text{earth}}}{r^{2}} \\ &\approx \frac{(6.672 \times 10^{-11}\; {\rm N \cdot m^{2}\cdot kg^{-2}})\, (5.98 \times 10^{24}\; {\rm kg})}{(3.45653 \times 10^{8}\; {\rm m})^{2}} \\ &\approx 3.34 \times 10^{-3}\; {\rm N\cdot kg^{-1}} = 3.34 \times 10^{-3}\; {\rm m\cdot s^{-2}}\end{aligned}[/tex].

Answer: 2NaHCO3 + CaCl2 > 2NaCl + CaCO3 + CO2 + H2O

Explanation:

It seems like your equation is balanced, but I'll explain how:

Unbalanced: NaHCO3 + CaCl2 > CaCO3 + NaCl + CO2 + H2O

The best ones to balance first are the ones that aren't C, H, or O

Balance Na:

Since there is 1 Na on the reactants and one on the products, we're fine now.

Balance Ca

That is also fine for now.

Balance Cl

Since there are 2 Cls on the reactants, you need 2 Cls on the products. The only product with Cl is NaCl, and since you have two, multiply the NaHCO3 and the NaCl by 2, since that way, it can be balanced with the CaCl2

Now, our equation is 2NaHCO3 + CaCl2 > 2NaCl + CaCO3 + CO2 + H2O

Balance C:

There are 2 Cs on the product, and 2 on the reactants, so that's fine.

Balance H:

There is one on both sides, so that's fine

Balance O:

There are 6 on both sides, so that's fine.

Your equation is balanced.

The amount of force required to stop an object, based on the forces of inertia and momentum, varies according to speed, weight, and the distance between impact and stop.

Inertia is the tendency of an object to remain in motion unless acted upon by an outside force, while momentum is the product of an object's mass and velocity. The amount of force required to stop an object is proportional to its mass, velocity, and the distance it needs to travel before it comes to a stop. The greater the mass, velocity, and distance, the more force is required to stop the object.

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x ,y=3.0m,1.5m is the electric potential in a region of space is v=300v⋅mx2+y2√, where x and y are in meters.

This helps conduct electricity by giving the flow of electrons a targeted direction, allowing them to move uniformly while simultaneously creating a positive charge known as an electrical current.

Electricity is the movement of electrons between atoms

The outer shells can hold even more. Some atoms with many protons can have as many as seven shells with electrons in them. The electrons in the shells closest to the nucleus have a strong force of attraction to the protons.

The Whole Issue Is This:

A area of space has an electric potential of V=300V*m/(x2+y2)(1/2), where x as well as y are measured in meters.

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Answer:

"Greater"

If the moon is on the same side of the earth as the sun then one would expect a high tide (greater attraction of the water on the earth)

Likewise, if the moon and sun were on opposite sides of the earth, then one would expect the tide formed to be smaller.

Answer: 9 volts

Explanation:

One rule of Parallel circuits: All components share the same voltage

We can substitute the values of the direction vector of the line into the equations of the vector function and find the value of x0,y0 and z0.

To find a point p = (x0, y0, z0) where a vector function f is parallel to a given line l, we need to find a point where the direction of the vector function f is the same as the direction of the line l.

A line can be parameterized as:

l(t) = <x0, y0, z0> + t<a, b, c>

where (x0, y0, z0) is a point on the line, <a, b, c> is the direction vector and t is a scalar parameter.

A vector function can be represented as:

f (x, y, z) = <P(x, y, z), Q(x, y, z), R(x, y, z)>

The direction vector of a vector function is the vector whose entries are the partial derivatives of the function with respect to x, y and z.

The vector function f is parallel to the line l if the direction vector of the function is equal to the direction vector of the line.

So, we can set the direction vector of the vector function equal to the direction vector of the line:

<Px,Qy,Rz> = <a,b,c>

Now we can substitute the values of the direction vector of the line into the equations of the vector function and find the value of x0,y0 and z0.

It's worth noting that if the vector function is not differentiable, this method can not be applied and if it's not possible to find such a point.

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Answer:
If this help please set brainliest.

Centripetal acceleration is defined as the rate of change of velocity of an object moving in a circular path. It always points towards the center of the circular path that the object is following. This is because in order for an object to move in a circular path, there must be a force acting on it that is directed towards the center of the circular path. This force is known as the centripetal force.

The direction of the centripetal acceleration is therefore always the same as the direction of the centripetal force. This is because the centripetal acceleration is the result of the centripetal force acting on the object. The centripetal force causes the object to change direction, and the centripetal acceleration is the rate of change of velocity in that direction.

A wooden crate that was lying still on the ground was pushed by Dana with his foot. The force that she applied, which was 49 N, was sufficient to move the crate. Because the friction coefficient was 0.1, we can determine that the weight of the crate is 490 Newtons. The correct answer is B.

To find the weight of the crate, you can use the equation for the force of friction, which is:

In this case, the normal force is equal to the weight of the crate, so you can rearrange the equation to solve for the weight:

Plugging in the values from the problem, you get:

Since 1 N is equal to 0.225 pounds, the weight of the crate is 490 N * 0.225 pounds/N = 110.5 pounds.

This question should be written as follows and provided with answer choices:

Dana pushed a wooden crate that was at rest on the floor. The crate moved when she applied 49 N of force. If the friction coefficient was 0.1, what was the weight of the crate?

The correct answer is B.

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Answer:

C: lack of water flow due to irrigation

Explanation:

I remember learning this in class. It dried up because of poor precipitation, so I say the answer is C.