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A block of mass 77 g floats on a fluid, oscillating up and down at a frequency of 8 Hz. What is the value (in N/m) of the effective spring constant of the fluid?
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
A person jumps from the roof of a house 3.6-m high. When he strikes the ground below, Find his velocity just before his feet strike the ground
You push with a 20N horizontal force on a 2 kg mass resting on the horizontal surface against a horizontal friction force of 12N. What is the acceleration.
A half-Atwood machine consists of a block of mass 4.0 kg on a table, connected by a string that passes over a pulley to a hanging mass of 5.0 kg. how fast is it moving after the hanging block has fallen 2.0m
Old MacDonald had a farm, and on that farm he had a gate (see below). The gate is 3m wide and 1.8m high, with hinges attached to the top and bottom. The guy wire makes an angle of 300 with the top of the gate and is tightened by a turn buckle to a..
A point charge is a = 1.5 m below the end of a continuously charged rod with charge Q = 5 ?C, Write an expression for the differential element of the y component of the Electric Field at P in terms of the charge density
Two current-carrying wires are exactly parallel to one another and both carry 3.5 A of current. What is the direction of the magnetic force caused by wire 2 on wire 1
determine the downward force of the rails on the car when the upside-down car is at the top of the loop
the speed at which the ball left the quarterback's hand.
Draw a complete rigid body diagram for a boom of a crane. Given, it is hanging clockwise, with a mass hanging from it as well
A 140 kg piano is being lifted at a steady speed from ground level straight up to an apartment 16.0 m above the ground. The crane that is doing the lifting produces a steady power of 400W. Explain how much time does it take to lift the piano?
At launch, the space shuttle's engines offer a thrust of 29 x 10^6N, and it accelerates upward at 1.75 m/s^2. What is the shuttle's mass.
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