The bending of a seismic waves as it crosses a boundary is called a) absorption b) reflection c) refraction d) rarefaction

"why is graphite used instead of gold or copper wires to conduct electricity in very hot situations such as an industrial kiln? " that's the question, but the thing is, i don't even understand what an "industrial kiln" xd assistance would be < 3

When an object is heated it contracts. a. true b. false

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?