Which of these follows from kepler's laws of planetary motion?
a- a satellite will slow down as it gets further from the much more massive object it orbits.
b- objects attract each other with a force proportional to the product of their masses.
c- planets closer to the sun have lower orbital speeds.
d- all planets move in circular orbits.

Which would not reduce the amount of green house gasses in the air

What are the phases shown in a and d called?

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm