What does the latent heat of vaporization measure? A. The energy required to melt a substance
B. The energy required to heat a substance
C. The energy required to form a substance
D. The energy required to boil a substance

Which of these is the result of scientific research and not engineering? a. a new shoe design that features air cushioning for more comfort and protection b. the creation of glass with uv protection. c. a conclusion about diet commonalities among diabetics. d. the development of a smaller, more compact missile.

What metric units would you use to measure the thickness of a key

The velocity of any object depends upon a) the location of the object. b) the location of the observer. c) which measurement tools are used. d) the relative motion of the observer.