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Two forces parallel to the x axis do 18.6 J of work on a small tray while moving it 23.9 m in the x direction across a gym floor. One of the forces has a value of +3.53 N in the x direction. What is the other force?
A cannon is aimed at an angle of 30 degrees above the horizontal. It fires a cannonball into the direction of a valley with a muzzle velocity of 100m/s. What is the maximum height of the ball
A bus was initially traveling with a velocity of 50 km/hr east. Later it was observed traveling with a velocity of 100 km/h north. What was the change in velocity of the bus
An unhappy rodent of mass 0.289kg , moving on the end of a spring with force constant 2.52N/m , is acted on by a damping force Fx=?b?vx. If the constant b has the value 0.894kg/s , what is the frequency of oscillation of the mouse
The two surfaces of a plastic converging lens have equal radii of curvature of 22.5cm , and the lens has a focal length of 21.0cm .Calculate the index of refraction of the plastic.
A motorcycle is following a car that is traveling at constant speed on a straight highway. How long does it take from the moment
if i connect a large number of 80.0 of capacitors in parallel across a 320.0 v battery how many capacitors do i need to
The mass of a space shuttle is approximately 2.0x10^6 kg. Throughout lift-off, the net force on the shuttle is 1.0x10^7 newtons directed upward. What is the speed of the shuttle 10 seconds after liftoff.
If two carts were hooked together at rest. Then a small explosion occurs and the carts move in opposite directions. Is momentum conserved? is Energy conserved? Explain
A boy 10.0 m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. How far from the tree will the dog catch the ball
Consider two stars, A and B, whose parallaxes are, respectively: 0.01 arcsec and 0.005 arcsec. What are the distances to each star in parsecs
Welcome to PHYS 151, "Mechanics and Heat." In this class we will explore the foundations of modern mechanics from the point of view of our current, best understanding of the physical universe.
A meteorite has a speed of 75.0m/s when 800km above the Earth. It is falling vertically (ignore air resistance) and strikes a bed of sand in which it is brought to rest in 3.50m. How much thermal energy is produced?
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