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.

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

Which of the following statement is false ? a.batteries should never be stored on metal trays or outside in the elements)b, battery acid cannot be neutralized)c.do not stack batteries on top of each other)d.never put a damaged battery in a dumpster. i

Smallest intensity of a stimulus that you can detect 50 percent of the time is