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A ball of mass 8.9 g with a speed of 22.4 m/s strikes a wall at an angle 14.0o and then rebounds with the same speed and angle. It is in contact with the wall for 46.0 ms. What is the magnitude of the impulse associated with the collision force? What is the average force exerted by the ball on the wall?
A cat dozes on a stationary merry-go-round, at a radius of 6.0 m from the center of the ride. What is the least coefficient of static friction between the cat and the merry-go-round
A rod is initially at a uniform temperature of 0 o C throughout. One end is kept at 0oC , and the other is brought into contact with a steam bath at 100 o C.
What force must be applied to push a carton weighing 310 N up a 16° incline, if the coefficient of kinetic friction is 0.41
A tennis player places a 40 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.052 kg tennis ball horizontally with a velocity of 30.6 m/s toward the north. What will be the final velocity of the machine.
A spring is hung from the ceiling. A 0.400-kg block is then attached to the free end of the spring. Find the angular frequency of the block's vibrations
A circular coil of wire with 40 turns and a radius of 33.3 cm is laying flat on a horizontal, find the magnitude of the magnetic flux through the coil
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
Two point charges of magnitude 4.0 μC and -4.0 μC are situated along the x-axis at x1 = 2.0 m and x2 = -2.0 m, respectively
A bullet with a mass of 25.0 grams is fired into a block with a mass of 2.50 kg hanging from a string. to what height will the block and bullet go
A 6-kg stone is tied to a 0.79-m long string and swung around a circle at a constant angular velocity of 19 rad/s
A 2.10 kg mass attached to a spring oscillates with a period of 0.375 s and an amplitude of 20.5 cm. Find the total mechanical energy of the system
A student could either pull or push, at an angle of 30â?? from the horizontal, a 45kg crate on a horizontal surface, Calculate the minimum work required for both pulling and pushing
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