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A rock is shot vertically upward from the edge of the top of a tall building.The rock reaches its maximum height above the top of the building 1.90 s after being shot. Then, after barely missing the edge of the building as it falls downward, the rock strikes the ground 7.00 s after it is launched. In SI units: (a) with what upward velocity is the rock shot, (b) what maximum height above the top of the building is reached by the rock, and (c) how tall is the building?
A car drives straight off the edge of a cliff that is 64-m high. The police at the scene of the accident note that the point of impact is 110-m from the base of the cliff. How fast was the car travelling while it went over the cliff.
A dragster drives a quarter mile (402 m) at a constant rate of acceleration, starting from rest and finishing the race at a final speed of 450 km/hr. what average power was developed by the engine
A 120 kg mail bag hangs by a vertical rope 4.00 m long. A postal worker then displaces the bag to a position 2.10 m sideways from its original position, always keeping the rope taut.
At relatively high temperatures nitrogen and oxygen more readily form a compound according to: N2(g) + O2 2NO(g). Calculate kp given that the initial pressures of nitrogen are 95 atm and 80 atm
A uniform string of length is 2.5 m and mass 0.01 kg is placed under a tension 10N. What is the frequency of its fundamental mode?
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 1200 kg car is pulling a 500 kg triler along level ground. Friction is negligible. What is the magnitude of the force exerted by the car on the trailer
At a position in the Philippines, Earth's magnetic field of39 µT is horizontal and directeddue north. What is the magnitude and direction of the current
Scientists want to place a 3600.0 kg satellite in orbit around Mars. They plan to have the satellite orbit a distance equal to 1.8 times the radius of Mars above the surface of the planet. What is the force of attraction between Mars and the satell..
A homemade capacitor is assembled by placing two 7 in pie pans 10 cm apart and connecting them to the opposite terminals of a 9 V battery. Estimate the work done by the battery to charge the plates
If Galileo dropped a 2.37 kg cannon ball from the 58.5m Tower of Pisa, how much work did gravity do on the ball
A mass-spring system oscillates with an amplitude of 5.00 cm. If the spring constant is 266 N/m and the mass is 457 g, determine the mechanical energy of the system
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