Picture a 500kg roller coaster car at rest (it has just a little energy to start rolling down) at the top of the highest hill of a roller coaster.  If the change in height from the top of the hill to the lowest point of the roller coaster is 40m, the maximum speed of the coaster is 

Write the correct abbreviation for each metric unit

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

(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