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A cubical room 2.5 x 10^7 m^3 (NASA's vehicle assembly building) is filled with nitrogen (N2) gas @ 100 kPa and 27 degrees Celsius. What is the mass of the gas in the room?
A popular pastime is to see who can push an object closest to the edge of a table without its going off. If the coefficient of kinetic friction is 0.400, what was the object's speed as you released it
A 4.0 capacitor is connected in series to a resistor. If an emf source is connected in series to this arrangement, what is the resistance of the circuit
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply, find the current flowing through the third light bulb
A heat engine has a useful work output of 4.0 kJ and expels 8.0 kJ of exhaust energy in each cycle. what is the engine's thermal efficiency
Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G, What is the density of the sun
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. How many revolutions would the wheel have made during this time
The orbital angular momentum of an electron has a magnitude of 4.716*10^-34 kg*m^2/s. What is the angular-momentum quantum number l for this electron
m1 = 26.00 kg, m2 = 13.10 kg, R = 0.12 m, and the mass of the uniform pulley M = 5.00 kg. Calculate the time interval required for m1 to hit the floor
The crest of the second hill is circular, with a radius of r = 35m. Avoid friction and air resistance. What must be the height h of the first hill so that skier just loses contact with the snow at the crest of the second hill.
A 34.7 m long aluminum wire at a temperature of 24.3 oC has a radius of 0.295 mm. determine the current in the wire
A passenger on a Ferris wheel moves in a vertical circle of radius R=2.0 m with a constant speed v. Draw a free-body diagram, and find the upward force the seat applied to her at the top of the circle
During a certain period of time, the angular position of a swinging door is described by ? = 5.03 + 9.8t + 1.90t2, Determine the angular position, angular speed, and angular acceleration
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