If an object emits or reflects light, a. it has a smooth surface. b. it can be seen by the eye. c. it must be the color white. d. it cannot be a gas.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

The charge on a charged sphere is: a)concentrated at its centerb)distributed uniformly throughout its volumec)clustered on its centerd)distributed uniformly over its surface

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is