Jacob eats a snack, and then plays basketball with his friends. When he shoots the basketball at the hoop, he is changing . chemical energy into mechanical energy
chemical energy into heat
mechanical energy into kinetic energy
electricity into heat

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.