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The swimmer shown in Figure exerts an average horizontal backward force of 85.0 N with his arm during each 1.80 m long stroke.
(a) What is his work output in each stroke?(b) Calculate the power output of his arms if he does 120 strokes per minute.
A woman is reported to have fallen113ft from a building, landing on a metal ventilator box, which she crushed to a depth of25in. Calculate the time it took to crush the box
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
transcranial magnetic stimulation is a noninvasive technique used to stimulate regions of the human brain. a small coil
An electron approaches a 0.500?nm?wide potential-energy barrier of height 4.60eV. What energy electron has a tunneling probability of 10%
A 190 g block hangs from a spring with spring constant 15 N/m. At t=0s, the block is 13 cm below the equilibrium point and moving upward with a speed of 98.0 cm/s.
A 40-pF capacitor is immersed in silicone oil, which has a dielectric constant of 2.6. Find how much energy is stored in the capacitor
A neutral (uncharged) capacitor has a charge of -3.00C moved from one of the plates to the other in a time of 5.00 sec, leaving +3.00C on the 1st plate. The +charges don't move, only the electrons. What was the average current?
A simple electric motor consists of a150 turn coil 3.0 centimeter in diameter, mounted between the poles of a magnet that produces a 0.24 T field. Find the maximum torque developed by the motor
A car drives straight off the edge of a cliff that is 46 m high. How fast was the car traveling when it went over the cliff
An Automobile engine slows down from 4500 rpm to 1200 rpm in 2.50 s. Calculate (a) its angular acceleration, assumed constant and (b) total number of revolutions the engine makes in this time.
Calculate The Coefficient Of Friction Between Two Surfaces
An airplane flies in a loop (a circular path in a vertical plane) of radius 150m . The pilot's head always points toward the center of the loop, What is the apparent weight of the pilot at this point
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