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

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g

The heliocentric and the geocentric models of the solar system included these central principles

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.