Arock exerts 5000 pa of pressure on the ground. if the rock weighs 250 n, how much area is in contact with the ground?
8 m2
50 m2
20 m2
0.05 m2

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

Observations show that interstellar clouds can have almost any shape and

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.