Two satellites S1 and S2 orbit around a planet P in circular orbits of radii r1 = 5.30 106 m, and r2 = 8.40 106 m respectively. If the speed of the first satellite S1 is 1.65 104 m/s, what is the speed of the second satellite, S2 in m/s?

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

What is a good example of instantaneous speed

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !