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The air inside a bicycle tire pump has 217 joules of work done on it as 55.3 joules of heat are added to it. What is the change in internal energy of the air?
If a Car of mass 1200kg traveling at 28m/s is brought to a complete stop in 4 seconds after the brakes lock the wheels. Find the average frictional force exerted on the car.
A building is 45m long. You run along the front of the building on your way to try to catch a bus. What was your average velocity during this time
An electron beam contains electrons that move along the +x-axis at 0.020c. The beam enters a region of length 1.0 m and runs parallel to a wire that carries a 0.20-A current in the +x-direction.
a. Derive Lagrange's equations and find the generalized force. b.Discuss the motion if the force is not applied parallel to theplane of the disk?
If the relative humidity is 84.0% on a muggy summer morning when the temperature is 20.0°C, what will it be later in the day when the temperature is 30.0°C, assuming the water vapor density remains constant
A newly designed electric train is to be driven by the force on a conducting axle due to the vertical component of Earth's magnetic field. At what rate would electrical energy be lost per ohm of resistance in the rails
An Olympic skier moving at 20.0 m/s down a 30.0o slope encounters a region of wet snow, of coefficient of friction μk=0.740. Find how far down the slope does she go before stopping
The beat detected on a moving platform. A speaker fixed to a moving platform moves toward a wall, emitting a steady sound by a frequency of 215Hz. A person on the platform right next to the speaker detects the sound waves reflected off the wall and t..
A football player with a mass of 87 kg and a speed of 2.1 m/s collides head-on with a player from the opposing team whose mass is 120 kg, Find the speed of the players after the collision
Jim is speeding toward James Island with a speed v = 22 m/s when he sees Betsy standing on shore at the base of a cliff. Jim sounds his f = 365-Hz horn. What frequency does Betsy hear
In a circut all six resistors share the same value R. Calculate the equivalent resistance between points A & B
a projectile is at the highest point in its path. is its acceleration at this instant greater than less than or equal
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