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A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 3.2 meters long and 1.6 meters high. A 3.0 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it hits and sticks to another block that has a mass of 7.0 kg. After the blocks travel some distance, the blocks come to a rough patch that has a coefficient of friction of 0.25 between the blocks and the rough surface. How far along the rough patch do the blocks go before stopping?
The drive propeller of a ship starts from rest and accelerates at 2.44 x 10-3 rad/s2 for 2.43 x 103 s. Find the total angular displacement of the propeller
A railroad car of mass 3.0x10^4 kg moving at 4.00 m/s collides and couples with two coupled railroad cars, what is the speed of the three coupled cars after the collision
A candle is placed 16.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 7.5 cm farther away from the mirror. Find out the focal length of the convex mirror.
An elevator cable can withstand a maximum tension of 19,500N before breaking. The elevator has a mass of 480 kg and a maximum acceleration of 2.24 m/s2. Engineering safety standards require that the cable tension never exceed two-thirds of the breaki..
Assume the masses of the chains, pulleys, and ropes are negligible. Determine the force F required to lift the crate with constant speed. Identify the tension in the upper chain.
A 15-uF capacitor is connected to a 50-V battery and becomes fully charged. What is the voltage across the capacitor's plates after the slab is inserted
A 160 g trick baseball is thrown at 63 km/h . It explodes in flight into two pieces, How much energy, in joules, do the pieces gain in the explosion
A pendulum consisting of a ball of mass m hanging from a massless rope is dropped from a height h. How high does the ball on the pendulum rebound from its collision with the block
A river 108.0 m wide flows toward the south at 35.6 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. How long does it take her to cross the river
Lemur and Chimp find a 200-kg treasure chest filled with gold plated bananas. What is the speed of the treasure chest after sliding 30 m down the incline
Describe what happens (in terms of the electron wave functions) when you bring together a bunch of copper atoms to form a solid block of copper, how the electrons are filled in these energy levels
ball A is dropped (starting at rest) from the top of a buildingof heighth at the sameinstant that ball B is thrown vertically upward from the ground. At what height does the collision occur
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