Questions from College Physics

Q: In intergalactic space, there is an average of about one hydrogen

In intergalactic space, there is an average of about one hydrogen atom per cubic centimeter and the temperature is 3 K. What is the absolute pressure?

Q: Rank the time intervals in order of increasing displacement, from largest

Rank the time intervals in order of increasing displacement, from largest negative to largest positive.

Q: The alveoli (see Section 13.8) have an average

The alveoli (see Section 13.8) have an average radius of 0.125 mm and are approximately spherical. If the pressure in the sacs is 1.00 × 105 Pa, and the temperature is 310 K (average body temperature)...

Q: A tank of compressed air of volume 1.0 m3 is

A tank of compressed air of volume 1.0 m3 is pressurized to 20.0 atm at T = 273 K. A valve is opened, and air is released until the pressure in the tank is 15.0 atm. How many molecules were released?...

Q: A 10.0 L vessel contains 12 g of N2 gas

A 10.0 L vessel contains 12 g of N2 gas at 20°C. (a) Estimate the nearest-neighbor distance. (b) Can the gas be considered to be dilute? [Hint: Compare the nearest-neighbor distance to the diameter...

Q: In uniform circular motion, is the velocity constant? Is the

In uniform circular motion, is the velocity constant? Is the acceleration constant? Explain.

Q: A mass of 0.532 kg of molecular oxygen is contained

A mass of 0.532 kg of molecular oxygen is contained in a cylinder at a pressure of 1.0 × 105 Pa and a temperature of 0.0°C. What volume does the gas occupy?

Q: During hibernation, an animal's metabolism slows down, and its body

During hibernation, an animal's metabolism slows down, and its body temperature lowers. For example, a California ground squirrel's body temperature lowers from 40.0°C to 10.0°C during hibernation. If...

Q: Verify, using the ideal gas law, the assertion in Problem

Verify, using the ideal gas law, the assertion in Problem 38 that 1.00 mol of a gas at 0.0°C and 1.00 atm occupies a volume of 0.0224 m3.

Q: In the Netherlands, a dike holds back the sea from a

In the Netherlands, a dike holds back the sea from a town below sea level. The dike springs a leak 3.0 m below the water surface. If the area of the hole in the dike is 1.0 cm2, what force must the Du...