Questions from College Physics

Q: If you wanted to make a scale model of air at 0

If you wanted to make a scale model of air at 0.0°C and 1.00 atm, using Ping-Pong balls (diameter, 3.75 cm) to represent the N2 molecules (diameter, 0.30 nm), (a) how far apart on average should the...

Q: A ray of light is incident normally from air onto a glass

A ray of light is incident normally from air onto a glass (n = 1.50) prism as shown in the figure with Problem 24. (a) Draw all of the rays that emerge from the prism and give angles to represent the...

Q: 1. An organ pipe is closed at one end. Several

1. An organ pipe is closed at one end. Several standing wave patterns are sketched in the drawing. Which one is not a possible standing wave pattern for this pipe? 2. Of the standing wave patterns sk...

Q: A sign is hanging from a single metal wire, as shown

A sign is hanging from a single metal wire, as shown in part (a) of the drawing. The shop owner notices that the wire vibrates at a fundamental resonance frequency of 660 Hz, which irritates his cust...

Q: As in Fig. 25.41, two coherent plane waves

As in Fig. 25.41, two coherent plane waves travel toward a photographic plate, one incident normally and the other incident at angle θ0. Show that the distance between fringes of constructive interfer...

Q: A pole-vaulter of mass 60.0 kg vaults to

A pole-vaulter of mass 60.0 kg vaults to a height of 6.0 m before dropping to thick padding placed below to cushion her fall. (a) Find the speed with which she lands. (b) If the padding brings her t...

Q: The vertical component of the acceleration of a sailplane is zero when

The vertical component of the acceleration of a sailplane is zero when the air pushes up against its wings with a lift force of 3.0 kN. (a) Assuming that the only forces on the sailplane are that due...

Q: The particle moves along the path shown from b to a.

The particle moves along the path shown from b to a.

Q: 11. The speed of sound in water is_____than the

11. The speed of sound in water is_____than the speed of sound in air because_____. (a) faster; water is much harder to compress (b) faster; water is much more dense (c) slower; water is much easier t...

Q: 1. In a mixed gas such as air, the rms

1. In a mixed gas such as air, the rms speeds of different molecules are (a) independent of molecular mass. (b) proportional to molecular mass. (c) inversely proportional to molecular mass. (d) propor...