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​

Asatellite that goes around the earth once every 24 hours iscalled a geosynchronous satellite. if a geosynchronoussatellite is in an equatorial orbit, its position appearsstationary with respect to a ground station, and it is known as ageostationary satellite find the radius rof the orbit of a geosynchronous satellite that circles the earth.(note that ris measured from the center of the earth, not the surface.) you mayuse the following constants: the universal gravitational constant g is 6.67 \times 10^{-11}\; {\rm n \; m^2 / kg^2}. the mass of the earth is 5.98 \times 10^{24}\; {\rm kg}. the radius of the earth is 6.38 \times 10^{6}\; {\rm m}.