A spring is of natural length 5 m and modulus 25 N. Find the thrust in the spring when it is compressed to a length of 1-2 m.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

How many neutrons does plutonium -196 with an atomic number of 78.

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation