Which of the following best describes a plane?
a. the edge of a desk
b. the point of intersection of two walls
c. a curve in a road
d. the surface of a flat table

Astone is thrown into a pond. what happens to the amplitude of the resulting waves as they get farther from the point where the stone hit the water? explain.

What properties of a moving object are used in determining the object's energy of motion

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present