Questions from College Physics

Q: The data in the following table are from a constant-volume

The data in the following table are from a constant-volume gas thermometer experiment. The volume of the gas was kept constant, while the temperature was changed. The resulting pressure was measured....

Q: About how long will it take a perfume molecule to diffuse a

About how long will it take a perfume molecule to diffuse a distance of 5.00 m in one direction in a room if the diffusion constant is 1.00 × 10−5 m2/s? Assume that the air is perfectly still—there ar...

Q: At a normal body temperature of 37.0°C,

At a normal body temperature of 37.0°C, (a) what is the average kinetic energy of the gas molecules in the lungs? (b) If a fever increases the temperature to 37.8°C, by what percentage does the aver...

Q: A marble of mass 10 g is confined to a box 10

A marble of mass 10 g is confined to a box 10 cm long and moves at a speed of 2 cmis. (a) What is the marble's quantum number n? (b) Why can we not observe the quantization of the marble's energy? [...

Q: A toy cart of mass m1 moves on frictionless wheels as it

A toy cart of mass m1 moves on frictionless wheels as it is pulled by a string under tension T. A block of mass m2 rests on top of the cart. The coefficient of static friction between the cart and the...

Q: A beam of electrons of mass me is deflected vertically by the

A beam of electrons of mass me is deflected vertically by the uniform electric field between two oppositely charged, parallel metal plates. The plates are a distance d apart, and the potential differe...

Q: Estimate the time it takes a sucrose molecule to move 5.

Estimate the time it takes a sucrose molecule to move 5.00 mm in one direction by diffusion in water. Assume there are no currents in the water.

Q: The volume of air taken in by a warm-blooded vertebrate

The volume of air taken in by a warm-blooded vertebrate in the Andes Mountains is 210 L/day at standard temperature and pressure (i.e., 0°C and 1 atm). If the air in the lungs is at 39°C, under a pres...

Q: Your friend is 3.0 m away from you in a

Your friend is 3.0 m away from you in a room. There are no significant air currents. She opens a bottle of perfume, and you first smell it 20 s later. How long would it have taken for you to smell it...

Q: An iron cannonball of radius 0.08 m has a cavity

An iron cannonball of radius 0.08 m has a cavity of radius 0.05 m that is to be filled with gunpowder. If the measurements were made at a temperature of 22°C, how much extra volume of gunpowder, if an...