What is the temperature at which a substance melts or freezes?

Two people are standing on the edge of a building that is 42 meters high. One person throws a tennis ball straight downward at a speed of 16 m/s. At the same exact time, the other person throws a tennis ball straight upward at 16 m/s.

Your teacher burns a piece of steel wool in class, demonstrating the chemical property, flammability. You are curious to see what other things can demonstrate chemical properties. Which of these does not demonstrate a chemical change?

A mass on a spring that has been compressed 0.1 m has a restoring force of 20 N. What is the spring constant?

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.

Why do the pvc plastic wells used in this weeks elisa need to be sticky on the inner walls and how may your results change if a different non-adherent plastic was used instead?

All of the following describe climate except it is hot today the average temperature of a place the average precipitation of a place the average number of sunny days of a place

A 55 kilogram person jumps off a cliff and hits the water 5.8 seconds later, how high is the cliff above the water?

The force that is most responsible for the stability of the atomic nucleus is: A.) gravityB.) electromagnetismC.) strong nuclear force D.) weak nuclear force

when two object P and Q are supplied with the same quantity of heat, the temperature change in P is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat capacity of P to Q

Why do we say energy is the ability to do work