7 12 A gas is trapped inside a cylinder by a movable piston. The length of the gas column is 50cm and
the pressure inside the cylinder is p.
50 cm
gas
p
The piston is pushed in a distance of 30 cm, so that the length of the gas column is now 20 cm.
The temperature of the gas does not change.
What is the new pressure of the gas?
A
D 2.5p
C 1.5p
в 0.6р
0.4p​

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.

What type of force holds atoms together in a crystal?