If general relativity offers the best description of what happens in the presence of gravity, why do physicists still make use of Newton's equations in describing gravitational forces on Earth (when building a bridge, for example) ?

Fill In the Blank: In a physical change, the of a substance does not change. The only thing that changes is a.

Which form of energy does a plant store when light is transformed during photosynthesis?

Two men are pushing a box in the same direction, to the right along the floor. the first man is pushing with a force of 20n. the second man is pushing with a force of 10n. the force of friction acting on the box has a magnitude of 5n.

Acceleration due to gravity is (always / sometimes / never) the same on the earth.

A mineral a. has a chemical formula. c. has a characteristic internal structure. b. occurs naturally. d. All of the above.

Because the moon rotates once for each revolution around Earth, Choose one answer. a. you see some phases more than others. b. a different side of the moon faces Earth each day. c. you never see the far side of the moon.

Planet A takes 1 year to go around its star at an average of 1 A. U. distance. Planet B is 4 A. U. from the star. Calculate how long Planet B takes to orbit.

Average mass of a toy car (small, hot wheels) ?

A pwc capsizes. what is the best way to roll the pwc to turn it upright?

Which biome has the most extreme conditions