4. In red (or another color), draw the normal force vector (with feeler-dealer notation) for the person riding in the rollercoaster car at location A, B and C

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

The energy released by a nuclear fusion reaction is produced when