Electrical energy can produce many other types of energy. When electricity runs through the speaker of a stereo, what other types of energy are produced?
A. sound energy
B. energy of motion
C. chemical energy
D. light energy

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

How does a scientist the government? a. the scientist tells people in society what to do. b. the scientist determines the policies that the government spends money on. c. the scientist provides unbiased information to the government. d. the scientist makes laws based on his or her research results.

An observation that requires measurement is called quantitative observable or qualitative