Which of the following statements is true? Solids transfer heat through convection.
Some machines are 100 percent effecient.
O Exothermic reactions release heat.
Kinetic energy is stored energy.

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.