1. Mike wears an 8.50 kg backpack while scaling a cliff. After 90 minutes, Mike is 11.2 m above the starting point. a. How much work does Mike do on the backpack?
b. If Mike weighs 630 N, how much work does he do lifting himself and the backpack?
c. What is the average power developed by Mike?

Match the atomic particles with their characteristics. 1. made of two protons and two neutrons neutron 2. similar to an electron; positive charge neutrino 3. orbits nucleus; negative charge positron 4. bundle of energy; zero charge proton 5. found in nucleus; positive charge meson 6. very unstable; +, -, or zero charge gamma 7. found in nucleus; zero charge electron 8. negative particle; negative charge beta 9. atomic energy converted to mass alpha

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)