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1. A 38.1-mm-diameter, 0.0245-N table tennis ball is released from the bottom of a swimming pool. With what velocity does it rise to the surface? Assume it has reached its terminal velocity.
2. A hot-air balloon roughly spherical in shape has a volume of 70,000 ft3 and a weight of 500 lb (including passengers, basket, balloon fabric, etc.). If the outside air temperature is 80 °F and the temperature within the balloon is 165 °F, estimate the rate at which it will rise under steady-state conditions if the atmospheric pressure is 14.7 psi.
A car fuel tank is filled to the brim with 45 L (12 gal) of gasoline at 10 °C. Find how much gasoline overflows from the tank as the result of the expansion
A particle leaves the origin with an initial velocity v(bold)=2.4m/s xhat, How far does the particle move in the x direction before it turns around
If the mass is released from rest and has an initial displacement downwards 0.5 m, determine the displacement of the mass after 2 seconds
A transformer with 410 turns in its primary coil and 34 turns in its secondary coil is designed to deliver an average power of 1300 W with a maximum voltage of 60 V
A car moving at 36 m/s passes a stationary police car whose siren has a frequency of 500 hz. What is the change in the frequency (in Hz) heard by an observer
a lightning bolt delivers a charge of 37 c to the ground in a time of 1.0 x 10-3 s. what is the current?the heating
a 0.10kg dart is fired horizontally at the center of a 0.80kg vertically hanging block sticking to it. the system
a parallel-plate capacitor is designed so that the plates can be pulled apart. the capacitor is initially charged to a
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the total time the blue car is moving
a motorcycle has a constant acceleration of 2.74 ms2. both the velocity and acceleration of the motorcycle point in the
A mass less cylinder 49 cm long rests on a horizontal frictionless table. The cylinder is divided into two equal sections by a membrane. One section contains nitrogen and the other contains oxygen. The pressure of the nitrogen is twice that of the ox..
A small container of water is placed on a carousel inside a microwave oven, at a radius of 11.5 cm from the center. What angle does the water surface make with the horizontal
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