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You measure the length of a futuristic car to be 3.50m when the car is at rest relative to you. If you measure the length of the car as it zooms past you at a speed of 0.880 c, what result do you get?
Consider the driven, damped harmonic oscillaror discussed. (a) Calculate the power dissipated by the damping force. (b) Calculate the average power loss, using the fact that the average of sin2( ?t+?) over a cycle is one-half.
Fluid is flowing through a pipe at a rate of 100 gal/min. The inlet pressure is 20 psig and the outlet pressure is 0 psig. At what rate [Btu/(hR)] is entropy generated
A ball is dropped from rest from the top of a building of height h. What is the height of the two balls when they are passing
A satellite has a mass of 110 kg and is located at 1.96 106 m above the surface of Earth, What is the magnitude of the gravitational force on the satellite
Suppose a ski-jumper lands at a point 63 m down an incline of 35 degrees, What was her speed at take-off
What is the electric potential energy of a system that consists of two protons 2.1×10?15 m apart-as might occur inside a typical nucleus
A 54.0kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of a circle with a radius of 3.90m
An idealized voltmeter is connected across the terminals of a 12.5-{\rm V} battery, and a 73.5-\Omega appliance is also connected across its terminals. What is the internal resistance of the battery?
After being struck by the stone, the boat's velocity is 1.9 m/s, due east. Illustrate what is the mass of the boat? Assume the water offers no resistance to the boat's motion.
An air conditioner operating between 97F and 72F is rated at 3900 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
A 39.6-kg boy, riding a 2.33-kg skateboard at a velocity of +5.07 m/s across a level sidewalk, find the skateboard's velocity relative to the sidewalk at this instant
Two scales on a voltmeter measure voltages up to 21.0 and 30.7 V, respectively. Determine the coil resistance
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