On a summer's day, beach sand will feel, and be, much hotter than the adjacent water due to the sand's lower thermal conductivity. true or false?
T-T

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

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.

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?