Ethanol melts at -114 °C and boils at 78 °C. Predict the state of ethanol at:
a) -150 °C,
b) 25 °C,
c) 0 °C,
d) 100 °C.

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.

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force ?

Which characteristics can be used to differentiate star systems? check all that apply.