What is a vector? a. a scalar quantity. b. a quantity that has magnitude and direction. c. a magnitude that can be measured. d. a direction.

If the new moon happens on january 15th, what shape will it be on february 6th?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?