The photon energy for light of wavelength 500 nm is approximately (Show your work).

A. 1.77 eV

B. 3.10 eV

C. 6.20 eV

D. 2.48 eV

E. 5.46 eV

What are four physical changes a candle undergoes when a part of it is broken off?

Why do the astronauts float inside space stations?

What is the correct current value if the selector is in the 0.5 dcma position?

Identify the characteristic of gravity that is incorrect,

True or false Digitized information can be used by computers.

In which one of the following locations can a person hear the echo of a sound? a. At least 33.2 meters behind the reflecting surface b. Less than 16.6 meters in front of the reflecting surface c. Less than 33.2 meters behind the reflecting surface d.

F an electron fell to a lower orbit or energy level, energy would be A. created. B. emitted. C. absorbed. D. transferred.

Which is the correct order from the closest to the sun to the farthest away from the sun? A. terrestrial planets, asteroid belt, gas planets, Kuiper belt B. gas planets, asteroid belt, terrestrial planets, Kuiper belt C.

Ethylene (C2H4) reacts with oxygen gas to produce carbon dioxide and water. 45.0 grams of ethylene reacts, how many grams of carbon dioxide gas will be produced?

What causes ice to melt and water to boil