Which of the following happens when a solid changes to a liquid?
a. energy flows from the liquid to its surroundings
b. particles in the solid move from their fixed position and become less orderly
c. the solid particles lose energy
d. the temperature of the solid decreases as it melts

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

The least penetrating form of radiation is