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A tank of compressed air of volume 1.0 m3 is pressurized to 40.0 atm at T = 273 K. A valve is opened and air is released until the pressure in the tank is 33.0 atm. How many air molecules were released?
A crate with a weight of 50N rests on a horizontal surface. A person pulls horizontally on it with a force of 10N and it does not move. To start it moving, a second person pulls vertically upward on the crate. If the coefficient of static friction is..
A sinusoidal electromagnetic wave having a magnetic field of amplitude 1.35 mu T and a wavelength of 434 nm is traveling in the +x direction through empty space. What is the frequency of this wave? Hz What is the amplitude of the associated electric ..
A battery has an emf of 5.9 V and internal resistance of 0.78 ?. The battery is attached to the load resistor R = 7.3 ?. Find the electric current in the circuit.
A 2250 kg satellite used in a cellular telephone network is in a circular orbit at a height of 510 km abouve the surface of the earth. what is the gravitational force on the satellite
At what speed would your 4.98 m long car fit in the 4.19 m Part 1 When parked, your car is 4.98 m long. Unfortunately, your garage is only 4.19 m long. How fast would your car have to be moving (in c) for an observer on the ground to find your car..
question1assume you have a furnace wall that is constructed of two types of brick. the temperatures of inner and outer
A ball is thrown upward at 20 m/s from the top of a building, which is 100 meter high. Another ball is thrown downward from the top of the building at 15 m/s. What is their final speed when they hit the ground
Traditional slingshots of old were made from camel hair and are, on average, about 80 cm in length. How long would it take to reach this speed
calculate a 2d plane perpendicular to a plane normal of 001 in the reciprocal lattice of platinum fcc. the lattice
A record was set for stair climbing when a man ran upthe 1600 steps of the Empire State Building in 10 minutes and 59secs. what was his average power output during the limb
The potential difference across the filament of a lamp is maintained at a constant level while equilibrium temperature is being reached. It is observed that the steady-state current in thelamp is only one-ninth of the currentdrawn by the lamp when..
A consumer upset with the latest trend of postal rate increases has decided to try to send letters by balloon even though they may not reach their intended destination
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