A soccer ball rolls across a field with an initial velocity of 14.9 . Due to friction, it slows down at a rate of .5 until eventually coming to a stop. How far did it roll AND how long did it take to get there?

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

What occurs during a combustion reaction

(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