Grain is pored into a silo to be stored for later use. due to the friction between pieces of grain as they rub against eachother during the pouring process, one piece of grain picks up a charge of 6.0e-10c and another piece of grain picks up a charge of 2.3e-15c. what is the electric force between them if the pieces are 2 cm apart?

What do you think car designers do if the damage caused by a crash test is too severe?

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom

What kind of simple machine is a catapult?