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When spiking a volleyball, a player changes the velocity of the ball from 4.2m/s to -24m/s along a certain direction. If the impulse delivered to the ball by the player is -9.3kg . m/s, What is the mass of the volleyball?
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.370mm wide. What is the width of the central bright fringe?
a cannon fires a cannonball from the top of a wall at a speed of 29.42 ms and an angle of 13.75 degrees from the
The blades in a blender rotate at a rate of6600 rpm. What is the angular acceleration as the blades slow down
An object has a kinetic energy of 313 J and the momentum of magnitude 24.1 kg·m/s. Find out the speed and the mass of the object.
The force of repulsion that two like charges exert on each other is 4.0 N. What will the force be if the distance between the charges is increased to 6 times its original value.
a 2.9-kg cart is rolling along a frictionless horizontal track towards a 1.6-kg cart that is held initially at rest.
A carnot engine operates between asource temerature of 700 degrees celsius and a sink temperatiure of 20 degrees celsius. determine the efficiency of the engine
An arrow is shot horizontally from a height of 4.9 metersabove the ground. The initial speed of the arrow is 45m/s.Neglecting friction, how far will the arrow fly before hitting the ground
if you hold a 40 cm high square plane mirror 45 cm from your eyes, how far are you from the pole
a grandfather clock is controlled by a swinging brass pendulum that is 1.2 m long at a temperature of 21degc. a what is
a 220-turn coil carries 320ma . if the magnetic flux through the coil due to this current is 0.80wb whats the coils
An 8.57 kg block slides with an initial speed of 1.60 m/s up a ramp inclined at an angle of 27.8 degrees with the horizontal. find the distance the block slides before coming to rest
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