The thermodynamic process for an ideal gas system that has an unchanging internal energy and a heat intake that corresponds to the value of the work done by the system is known as an isothermal process.
In an isothermal process, the temperature of the system remains constant as the gas expands or contracts, and the internal energy of the system remains unchanged.
The heat intake of the system corresponds to the amount of work done by the system, which is equal to the change in the internal energy of the system.
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Two people carry identical 40.0N boxes up the ramp. The ramp is 2.00m long and 1.00m high. Person A walks up the ramp in 2.00s. Person B walks up the ramp in 4.00s. What is the difference in power the two people use to carry the boxes up the ramp
The difference in power for two people carrying the boxes up the ramp is 30 W.
Given the following data:
W = 40.0 N is the weight of a box.
The ramp's length is L = 2.00 m.
The platform height is h = 1.0 m.
t = 2.0 s is the time interval for the first person.
t' = 4.0 s is the time interval for the other person.
Power is the rate at which energy is used. The expression for the Power is given in the given question as,
P = W×(L+h)/t
Assume that you are solving for the first person.
P₁ = W(L+h)/t₁.................................................................. (1)
Substitute the following values into equation (1):
P₁ = 40(2+1)/2
P₁ = 20(3) (3)
P₁ = 60 W.
Regarding the second person,
P₂ = W(L+h)/t₂..................................................................... (2)
Fill in the blanks in equation (2) as follows:
P₂ = 40(2+1)/4
P₂ = 10*(3) *3)
P₂ = 30 W
Obtaining the difference in power as
P = P₁ - P₂
P = 60-30
P = 30 W
As a result, we can conclude that the difference in power for two people carrying the boxes up the ramp is 30 W.
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8. A 1580 kg car is traveling with a speed of 150 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m
The amount of horizontal net force needed to stop the car at a distance of 50.0 m is equal to F = 3555 N.
Describe a force.When a thing with mass is pushed or pulled, it changes its velocity, according to the definition of force in physics. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The newton, abbreviated N, seems to be the Standard unit of force.
What is the secret of using force?Newton's second principle of motion provides the definition of the force formula: An object's force corresponds to its mass x its acceleration. F = m ⨉ a.
u = 15 m/s
v= 0
s = 50m
v2 = u2 +2as
= 15*15 + 2*50*a
225 + 100a
a = 2.25m/s2
F = ma
F= 1580 * 2.25
F = 3555 N.
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Two packages are connected by a very light string that goes over an ideal pulley as shown in the figure. Package A has a mass of 3.0 kg and can slide along a rough plane inclined at 30° above the horizontal. The string acts on package A parallel to the surface of the plane. The coefficient of static friction between package A and the plane is 0.40. What minimum mass should package B have in order to start package A sliding up the ramp?
To find the minimum mass of package B that is needed to start package A sliding up the ramp, we can use the force of friction. The force of friction is given by:
Friction = friction coefficient * normal force
The normal force is the force perpendicular to the surface of the ramp and is equal to the weight of package A (3.0 kg * 9.8 m/s^2) times the cosine of the angle of the ramp (cos 30° = 0.866). So:
friction = 0.40 * (3.0 kg * 9.8 m/s^2 * 0.866)
friction = 10.5 N
The force needed to start package A sliding up the ramp is equal to the force of friction. To provide this force, package B needs to weigh at least:
mass of package B = force / (g)
mass of package B = 10.5 N / 9.8 m/s^2
The mass of package B = 1.07 kg
Therefore, package B must have a minimum mass of 1.07 kg to start package A sliding up the ramp.
When a comet comes close to the Sun, its volatile ice sublimates and transforms directly from the solid to ________ phase.
When a comet comes near the Sun, its volatile ice sublimates and changes directly from the solid to the gas phase.
Comets are cosmic snowballs of frozen gases, dust, and rocks, orbiting the Sun. When frozen, comets are the size of a small town. As the comet's orbit approaches the Sun, it heats up, spewing gases and dust onto its giant glowing head, larger than most planets.
Comets vaporize when their orbits come to close to the Sun. Comets do not melt in the strict sense of chinging to liquid. However, since they are made up partly of ice and other volatile compounds, comets vaporize (turn directly to gas) when warmed in the vacuum of space by orbiting near the sun.
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A 20.0 kg suitcase is raised 3.0 m straight up above a platform on a conveyor belt that is moving at constant velocity. How much work is done on the suitcase
A 20.0 kg suitcase is raised 3.0 m. The work done on the suitcase is 588 Joule
We can calculate work done in an object using the formula:
W = F x d
where:
W = work done on the object
F = force acted on the object
d = distance
The direction of the force that does the work should be the same with the direction of the displacement or the motion.
Work done can also be seen as the change of potential energy.
W = Δ PE
= m. g Δh
In this problem,
m = mass of the suitcase = 20 kg
g = gravitational acceleration = 9.8 m/s²
Δh = 3 m
Hence, the work done in the suitcase:
W = m. g Δh
= 20 x 9.8 x 3
= 588 Joule
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If the strength of the magnetic field at a is 27 units and the strength of the magnetic field at b is 3 units, what is the distance to b?.
It is 15 meters from point A to point B. The measure of magnetic field strength is the tesla.
The portion of a material's magnetic field that results from an external current and is not intrinsic to the material itself is known as the magnetic field strength, also known as magnetic intensity or magnetic field intensity. It is measured in amperes per meter and represented as the vector H.
H is defined by the formula H = B/ M, where B is the magnetic flux density, which measures the real magnetic field present in a material as a concentration of magnetic field lines, or flux, per unit cross-sectional area; is the magnetic permeability; and M is the magnetization.
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The complete question is
If the strength of the magnetic field at A is 27 units and the strength of the magnetic field at B is 3 units, what is the distance to B?
a) 10 m
b) 225 m
c) 15 m
A 30 foot ladder is set against the side of a house so that it reaches up 24 feet. If elizabeth grabs the ladder at its base and pulls it 3 feet farther from the house, how far up the side of the house will the ladder reach now?.
The side of the house will the ladder reaches now will be 21.4 feet(rounded to the nearest tenth)
To determine how far the ladder originally was from the wall, use the Pythagorean theorem:
Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry. According to this rule, the areas of the squares on the other two sides add up to the area of the square whose side is the hypotenuse, or the side across from the right angle. This theorem can be expressed as the Pythagorean equation, which is an equation connecting the lengths of the sides a, b, and hypotenuse c.
x = sqrt(30^2 - 24^2)
x = sqrt(900-576) (900-576)
x = sqrt (324)
x = 18
Initially, the ladder was 18 feet away from the wall. The new distance is 18 + 3 = 21 feet after moving the ladder back 3 feet.
To get the new height of the ladder, apply the Pythagorean theorem once more.
Height is equal to sqrt(30 - 2).
Height = squared (900 - 441)
Height = squared (459)
Size = 21.42
21.4 feet, rounded to the nearest tenth.
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what is the work done by a constant force in accelerating a 2kg block from rest to 15 m/s in a distance of 100m
Answer:
2000
Explanation:
workdone=F×D
mg×h
u=0
d=100
a=15
m=2
=2×10×100
=2000
Can anyone please help me answer this question?
What is/ are the dimensional formula for work?
Answer:Work = Force × Displacement. Or, W = [M1 L1 T-2] × [M0 L1 T0] = [M1 L2 T-2]. Therefore, work is dimensionally represented as [M1 L2 T-2].
Explanation:
Braking studies have shown that a tractor-trailer traveling at 55 mph needs ____ the distance to stop as an automobile.
Braking studies have shown that a tractor-trailer traveling at 55 mph needs two times the distance to stop as an automobile.
There are four parts that make up a vehicle's overall stopping distance i.e., Vehicle reaction time and distance, human perception time and distance, human reaction time and distance Vehicle Braking Distance and Time
The maximum distance your car will travel while braking under perfect circumstances. It may require 216 feet at 55 mph on dry pavement with decent brakes. The brakes must use more force to stop a bigger car, which increases heat absorption. On the other hand, large vehicles' brakes, tires, springs, and shock absorbers are made to function optimally when fully loaded. Trucks that are empty need longer stopping distances because they have less traction. It can lock up and bounce, providing substantially worse braking.
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Explain why someone might say that a ball dropped in New Zealand will not travel in the same direction as a ball dropped in Scotland.
Scientists at a metallurgy factory are testing different metals to study the strengths of the electrical forces between their atoms. They determined the force needed to bend a sheet of each metal and found that metal a requires 50 n of force, metal b requires 30 n, metal c requires 70 n, and metal d requires 100 n. Choose the words to finish the sentence.
The metal with the lowest moisture content should also have the lowest impact and consequently be the one that bends the easiest. Material B is that.
What do you mean by force?A push is the modification of an object's condition brought on by its surroundings. An item will either be at rest or in uniform motion as a result of forces. Think of a football lying still on the ground as an illustration. You must exert some effort on the ball in order to move it in any direction.
The sorts of bonds that the metal atoms form determine that boiling range of the metal. The intensity of the dispersion forces of a substance is directly related to the melting point of that substance. Therefore, the higher the boiling point of such material, the greater the intra - molecular tensions of the substance.
The metal with the maximum melting point with in periodic table is tungsten, at a temperature of 3422°C.
More energy is required to stop the binding between all these molecules as the intermolecular forces become more powerful. Because of this, rising intermolecular forces are accompanied with rising melting points.
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The complete question is-
Scientists at a metallurgic factory are testing different metals to study the strength of the electrical forces between their atoms. They determined the force needed to bend a sheet of each metal and found that metal a requires 50 n of force, metal b requires 30 n, metal c requires 70 n, and metal d requires 100 n. Which metal will have the lowest melting point?
A). A
B). B
C). C
D). D
A 1.5 kg object falls from a height of 2.0 m onto a spring scale with a spring constant of 1.5x105 N/m. What is the reading on the scale at its greatest compression?
The reading on the scale at its greatest compression is 3,000 N.
What is the reading of the scale?
The reading of the scale at the greatest compression is determined by applying the principle of conservation of energy.
The greatest compression of the scale occurs when the potential energy of the object at the given height falls on the scale.
Mathematically, the formula for potential energy of an object is given as;
P.E = mgh
where;
m is the mass of the objectg is acceleration due to gravityh is the height of fall of the objectP.E = ( 1.5 kg x 9.8 x 2 )
P.E = 29.4 J
P.E = ¹/₂kx²
where;
x is the compression of the springk is the spring constantx² = 2P.E / k
x = √ ( 2P.E / k )
x = √ ( 2 x 29.4 / 150000 )
x = 0.02 m
The reading of the scale is calculated as follows;
F = kx
F = 150,000 x 0.02
F = 3,000 N
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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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consider ch4 and cf4. electronegativities: c = 2.5, h = 2.1, f = 4.0. which statement is false? A.Both molecules are nonpolar. B. The C-F bonds are more polar than the C-H bonds. OB. O C.Both are sp3 hybridized at carbon. D.The bond dipoles in CF4 and CH4 are directed toward the carbon atom E. There are no false statements. All of these statements are correct.
The false statement is D. The bond dipoles in CF₄ and CH₄ are directed toward the carbon atom. Because in CF₄, the bond dipole directed toward the Fluorine.
What is bond dipole?A bond dipole is the partial charge assigned to bonded atoms because of the differences in electron density which caused by electronegativity, inductive effects, and other factors. It is indicated with δ+ and δ- and/or the arrow symbol.
Dipoles can be examined by comparing the electronegativity of the bonded atoms. Arrows are used to show dipoles; arrows point towards the more electronegative atom. A dipole moment happens when there is an overall uneven distribution of electrons across a molecule.
Considering CH₄ and CF₄, which the electronegativities C = 2.5, H = 2.1, F = 4.0, due to the absence of any dipole moments, both molecules are non-polar. C-F bonds are more polar than C-H bonds. In CF₄, bond dipole directed toward Fluorine and in CH₄, bond dipole directed toward Carbon atom.
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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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power delivered to a dc circuit is the measure of the amount of ? the circuit per unit of time.
Power delivered to a dc circuit is the measure of the amount of energy delivered to the circuit per unit of time.
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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A 75 kg object is moved a distance of 44 m with a force of 55 N at an angle of 53 above the horizontal. How much work is done?
To move a distance of 44 m Work is done 1456.4 Joule.
What is work?A force must be applied and there must be movement in the force's direction for a work to be done scientifically. Having said that, we may state that: Work is the product of the displacement's magnitude and the component of force acting in that direction.
Mass of the object: m = 75 kg.
Force applied on it: F = 55 N.
Angle of applied force: α = 53°
Displacement: d = 44 m
Hence, work done: W = Fd cosα = 55 N × 44 m × cos53° Joule = 1456.4 J.
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Look at the diagram below. This type of power station is called a
word completes the sentence?
Answer:
hydroelectric
Explanation:
3. During a circus performance, a 72 kg human cannonball is shot out of an 18 m long cannon. a. Of the human cannonball spends 0.95 s in the cannon, determine the average net force on him in the barrel of the cannon. b. What will the velocity of the human cannonball be at it leaves the cannon
The human cannonball will depart the cannon at a velocity of 2872.8 N.
These details are what we know:
M = n72 kg, Y = 18 m, and T = 0.95 s.
From this point, the acceleration is calculated using the equation y=1/2at2.
A = (2 x 18m)/(0.95s2) = 36/0.9025 = 39.9m/s2.
We then apply the formula F = ma F=(72kg) x (39.9) = 2872.8N.
The average net force acting on him while he is inside the cannon's barrel is 2872.8N.
What does velocity vs. speed mean?Velocity, as opposed to speed, refers to the pace and direction of an object's movement as it moves down a path. In other words, whereas velocity is a vector, speed is a scalar quantity.
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True or false: The quantity represented by ω0 is a function of time (i.e., is not constant).
True or false: The quantity represented by ω is a function of time (i.e., is not constant
Which of the following equations is not an explicit function of time t, that is, does not involve t as a variable, and is therefore useful when you do not know or do not need the time? θ=θ0+ω0t+(1/2)αt2
ω=ω0+αt
ω2=ω02+2α(θ−θ0)
In the equation ω=ω0+αt, what does the time variable t represent? Choose the answer that is always true. Several of the statements may be true in a particular problem, but only one is always true. Choose the answer that is always true. Several of the statements may be true in a particular problem, but only one is always true.
the moment in time at which the angular velocity equals ω0
the moment in time at which the angular velocity equals ω
the time elapsed from when the angular velocity equals ω0 until the angular velocity equals ω
Suppose you are asked to find the amount of time t, in seconds, it takes for the turntable to reach its final rotational speed. Which of the following equations could you use to directly solve for the numerical value of t? Suppose you are asked to find the amount of time , in seconds, it takes for the turntable to reach its final rotational speed. Which of the following equations could you use to directly solve for the numerical value of ?
θ=θ0+ω0t+(1/2)αt2
ω=ω0+αt
ω2=ω02+2α(θ−θ0)
More information is needed before t can be found.
In the world around us, rotational motion with a constant nonzero acceleration is rather prevalent. For instance, several devices have rotating components. false when the machine is switched on or off.
What direction does the vector that represents the angular velocity point in?
When an item rotates clockwise, the direction of the angular velocity points away from you; when it rotates counterclockwise, it points toward you. This is described by the right-hand rule in mathematics.
How is angular velocity determined?
The angular velocity (w), a vector quantity in uniform circular motion, is determined by dividing the angular displacement (), also a vector quantity, by the change in time (t). The speed is calculated by dividing the arc length (S) by.
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A nylon rope used by mountaineers elongates 1.10 m under the weight of an 65.0-kg climber.
If the rope is 45.0 m in length and 7.0 mm in diameter, what is Young's modulus for this material?
The young modulus comes out to be 6.8 X 10⁸ Pa.
Young modulus is, also termed as modulus of elasticity.
Can be used as to measure of elasticity or extension of a material.
Stress strain curve is obtained based on young modulus.
The different regions of stress strain curve are,
1. Proportional limit
2. Elastic limit
3. Yield point
4. Ultimate Stress limit
5. Fracture or breaking point
Given is F = 65 kg
ΔL = 45m
Y = young modulus
Unit of young modulus is Pa
Y = (F/A) / (ΔL/L 0)
Y = 65 Kg X 9.8 X 45m / π X 3.5 X 10 ⁻³ X 1.10m
Y = 6.8 X 10⁸ Pa
The Young modulus can also be calculated by the stress/ strain.
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Help me in the question 4 plsss
Answer: gamma, ultraviolet, infrared, microwaves
Explanation:
It is based on shortest to longest wavelength and gamma has the shortest wavelength but the highest amount of energy.
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:
If a geostationary satellite was accidentally knocked into a higher orbit, how would this change the time it took the satellite to orbit the Earth
A satellite will not stay in the same position with respect to a certain location on the earth if its orbit is polar or inclined.
What is a geostationary satellite?Geostationary satellites circle the earth in the same direction as the planet and are located at an altitude of roughly 35,800 kilometers (22,300 miles) over the equator (west to east). One orbit takes place at this altitude in 24 hours, which is how long it takes the earth to complete one rotation of its axis.
The term "geostationary" refers to how a satellite of this type looks to an observer on the ground to be almost stationary in the sky. Geostationary satellites are used by the new worldwide mobile communications network, BGAN.
The satellite can remain in orbit for a longer period of time with a higher orbit. A satellite experiences drag when it encounters Earth's atmosphere at lower altitudes. The drag makes the satellite fall back into the atmosphere and burn up as the orbit decays.
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According to the article Alien Antimatter Crashes into Earth e: More than 60 years ago, future Nobel laureate Sheldon Glashow predicted that if an antineutrino - the antimatter answer to the nearly massless neutrino - collided with an electron, it could produce a cascade of other particles. The "Glashow resonance e" phenomenon is hard to detect, in large part because the antineutrino needs about 1,000 times more energy than what's produced in the most powerful colliders on Earth. Let's compare this event to an ordinary baseball with a mass of 146 g. Please use three significant figures in your calculations. Question 1 2 pts What is the threshold antineutrino energy for the Glashow resonance in peta electronvolts (PeV)? Question 2 2 pts What is this threshold energy in units of joules? dance Question 3 2 pts Now consider a baseball with the same kinetic energy as that of the Glashow resonance. What speed in m/s would correspond to this energy? Question 4 2 pts What is this rate in units of inches/second? Question 5 3 pts Compare and contrast IceCube e to Ice Cube e. How are they the same? How are they different? Edit View Insert Format Tools Table 12pt Paragraph BIU A ev T²v
FULL SOLUTION BELOW THE PIC.
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Calculate the speed of the car at each checkpoint by
dividing the distance between each checkpoint in meters
The speed at the first quarter checkpoint is
m/s.
by the change in time. Record your answers in Table C of
The speed at the second quarter checkpoint is
your Student Guide.
m/s.
The speed at the third quarter checkpoint is
v m/s.
The speed at the finish line is
m/s.
To solve this we must be knowing each and every concept related to speed. Therefore, the speed of the car at each checkpoint can be given as below.
What is speed?Speed may be defined as the distance traveled by an item in the amount of time it requires to travel that distance. In other words, it measures how rapidly an item travels but does not provide direction.
The SI unit system is most typically used to express speed. Speed is determined in metres per second, or m/s, since distance is recorded in metres while time is recorded in seconds.
At the first quarter checkpoint, the pace is 0.74 m/s. At the second quarter checkpoint, the pace is 1.40 m/s. At the third quarter checkpoint, the speed is 1.61 m/s. At the finish line, the speed is 1.89 m/s.
Therefore, the speed of the car at each checkpoint can be given as above.
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Answer:
The speed at the first quarter checkpoint is ✔ 0.74 m/s.
The speed at the second quarter checkpoint is ✔ 1.40 m/s.
The speed at the third quarter checkpoint is ✔ 1.60 m/s.
The speed at the finish line is ✔ 1.88 m/s
Explanation:
Hope this helps :DD
When people sleep, their metabolic rate is about 2.6×10−4C/(s⋅kg). How many Calories does a 80 −kg person metabolize while getting a good night's sleep of 8.5 hr ?
Answer:
7.93 calories
Explanation:
To find the total number of calories burned by an 80 kg person during a good night's sleep of 8.5 hours, you can use the formula:
calories burned = metabolic rate * weight * time
In this formula, the metabolic rate is given as 2.6 x 10^-4 calories per second, the weight is given as 80 kg, and the time is given as 8.5 hours. To use this formula, you first need to convert the metabolic rate to calories per hour and the time to seconds. There are 3600 seconds in an hour, so you can multiply the metabolic rate of 2.6 x 10^-4 calories per second by 3600 to get the number of calories per hour. This gives you a metabolic rate of 0.936 calories per hour. You can then multiply this value by the weight of 80 kg and the time of 8.5 hours to get the total number of calories burned. This gives you a total of 7.93 calories burned during a good night's sleep.
What is the speed of the block/bullet system after the collision? express your answer in terms of vi , mw , and mb.
The speed of the block/bullet system after the collision is:
v = (m₁v₁) + (m₂v₂) / (m₁ + m₂)
When two (or sometimes more) things hit in an inelastic collision, they stick together. The two-object system is an isolated system because we often ignore any external factors acting on the interacting components. This makes sense in practice if we look at the objects right before and right after the impact, before friction, gravity, etc., have a chance to exert any substantial impulses on our system.
The Law of Conservation of Momentum is typically used to handle inelastic collisions in one dimension. After all, a system's entire momentum will be conserved if no outside forces are acting on it.
Because momentum must be conserved,
P after = P before
So,
(m₁ + m₂)v = m₁v₁ + m₂v₂
Calculating v (velocity/speed) results in:
v = (m₁v₁) + (m₂v₂) / (m₁ + m₂)
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