What happens to a low-frequency photon when it hits a metal plate if its energy is less than the work function W0?

The current in a hair dryer measures 25 amps. The resistance of the hair dryer is 14 ohms. What is the voltage?

1. How many digits does the frog have on each of its forelegs and how many on each of its hind legs?

As waves travel away from a source of light, they spread over a larger area. Which describes the effect of distance on the intensity of light?

A centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers 140°.

Determine the absolute pressure on the bottom of a swimming pool 29.0 m by 8.2 m whose uniform depth is 1.9 m. express your answer using two significant figures.

The Hubble Space Telescope (HST) orbits 569,000m above Earth's surface. Given that Earth's mass is 5.97 * 10^24 kg and its radius is 6.38 * 10^6 m, what is HST's tangential speed?

What do safety features in a car do to protect us in a collision

Chemical sediments that result from the evaporation of water are

A college student is working on her physics homework in her dorm room. her room contains a total of 6.0*1026 gas molecules. as she works, her body is converting chemical energy into thermal energy at a rate of 125 w.

A uniform, thin, solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. (a) find its moment of inertia for rotation on its hinges. (b) is any piece of data unnecessary