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

How can water be used for energy? by using solar panels. by having more windows in your home. by using sunlight passively and actively. by placing dams in tidal areas.

The starship Enterprise approaches the planet Risa at a speed of 0.8c relative to the planet. On the way, it overtakes the intergalactic freighter Astra. The relative speed of the two ships as measured by the navigator on the Enterprise is 0.5c.

The atomic number of a nucleus decreases during which nuclear reactions?

The potential difference in a simple circuit is 12 V and the resistance is 23 Ω. What current flows in the circuit? Answer in units of A

A lemming running 2.22m/s runs off a horizontal cliff. It lands in the water 7.45m from the base of the cliff. How much time was it in the air?

Which of the following elements is the most reactive? Beryllium Calcium Magnesium Barium

A flash of white light containing all the colors of the visible spectrum in air shines straight down on the surface of a pool.

A car accelerates uniformly from 0 to 15m/s in 5 s. Calculate acceleration.

Which device would a sleep researcher use to monitor a sleeping person's brain waves?

An experiment is performed to obtain the value of a physical property. If the true (i. e., correct) value of the property is 50 and the measured (i. e., experimental) value is 32, the percent error of the experimental result is: