Questions from College Physics

Q: What is the total internal kinetic energy of 1.0 mol

What is the total internal kinetic energy of 1.0 mol of an ideal gas at 0.0°C and 1.00 atm?

Q: The output power of a laser pointer is about 1 mW.

The output power of a laser pointer is about 1 mW. (a) What are the energy and momentum of one laser photon if the laser wavelength is 670 nm? (b) How many photons per second are emitted by the lase...

Q: A diver rises quickly to the surface from a 5.0

A diver rises quickly to the surface from a 5.0 m depth. If she did not exhale the gas from her lungs before rising, by what factor would her lungs expand? Assume the temperature to be constant and th...

Q: In uniform circular motion, the net force is perpendicular to the

In uniform circular motion, the net force is perpendicular to the velocity and changes the direction of the velocity but not the speed. If a projectile is launched horizontally, the net force (ignorin...

Q: If 2.0 mol of nitrogen gas (N2) are

If 2.0 mol of nitrogen gas (N2) are placed in a cubic box, 25 cm on each side, at 1.6 atm of pressure, what is the rms speed of the nitrogen molecules?

Q: A scuba diver has an air tank with a volume of 0

A scuba diver has an air tank with a volume of 0.010 m3. The air in the tank is initially at a pressure of 1.0 × 107 Pa. Assuming that the diver breathes 0.500 L/s of air, find how long the tank will...

Q: There are two identical containers of gas at the same temperature and

There are two identical containers of gas at the same temperature and pressure, one containing argon and the other neon. What is the ratio of the rms speed of the argon atoms to that of the neon atoms...

Q: A sealed cylinder contains a sample of ideal gas at a pressure

A sealed cylinder contains a sample of ideal gas at a pressure of 2.0 atm. The rms speed of the molecules is v0. (a) If the rms speed is then reduced to 0.90v0, what is the pressure of the gas? (b)...

Q: How far does the object move from t = 0 to t

How far does the object move from t = 0 to t = 3 s?

Q: A smoke particle has a mass of 1.38 × 10

A smoke particle has a mass of 1.38 × 10−17 kg, and it is randomly moving about in thermal equilibrium with room temperature air at 27°C. What is the rms speed of the particle?