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What is the fractional decrease in pressure when a barometer is raised 35 m to the top of a building? (Assume that the density of air is constant over that distance.)
An AC generator is to have a maximum output of 332 V. Each coil has an area of 0.125 m2 and a resistance of 15.3 ? and rotates in a magnetic field of 0.739 T with a frequency of 35.7 Hz, Determine the induced emf as a function of time
how far did the last car travel before momentarily coming to a rest. A 3 kg block accelerates at a rate twice that of a 6 kg block. Is the net force acting on the 3kg block twice as large as that acting on 6kg block.
A drag force on a falling object in air is directly proportional to the square of its velocity. what will be the kinetic energy of an object
A girl hits a puck, giving it an initial velocity of 6m/s. If the coefficient of kinetic friction is 0.050, how far will the puck slide before stopping
Estimate the thickness of steel (density 8 g/cm3) needed to stop a proton of momentum 2 GeV/c. Then, for the same thickness of steel, calculate the energy loss of a 2 GeV/c gamma ray.
A disk with a 1.0-m radius reaches a maximum angular speed of 18 rad/s before it stops 30 revolutions (220 rad) after attaining the maximum speed
A gymnast does a one-arm handstand. The humerus, which is the upper arm bone between the elbow and the shoulder joint, What is the compressional strain of the humerus
determine the upward force on an airplane's wing if the average flow speed of air is 192 m/s above the wing and 164 m/s below the wing. The density of the air is 1.5 kg/m3 and the area of each wing surface is 26 m2.
A horse walks in a 24 ft diameter circle, making 144 trips around the circle in one hour. Using the currently accepted value of 746 watts for 1 horsepower, calculate the force in pounds with which the horse must have been pulling.
q1. a hotel elevator ascends 170 m with a maximum speed of 5.9 ms. its acceleration and deceleration both have the
Air molecules in a warm room
One of the fragments falls straight downward as though it had been released from rest. Explain how far from the gun does the other fragment land
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