The net forward force on the propeller of a 3200 g model airplane is 7.0 N. What is the acceleration of the airplane?
0.46 m/s^2
2.2 m/s^2
0.0022 m/s^2
22000 m/s^2

(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

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

Which is an example of an exothermic process?