Planets in Earth’s Solar System are grouped according to their distance from the Sun. Which choice correctly identifies an inner planet and an outer planet and their correct characteristics? A. Inner: Venus → made of rock and Outer: Neptune → made of gas
B. Inner: Mars → made of gas and Outer: Jupiter → made of rock
C. Inner: Uranus → made of gas and Outer: Mercury → made of gas
D. Inner: Saturn → made of rock and Outer: Earth → made of rock

How do we measure or think of speed in the united states?

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.

If you held a stone over the mouth of a well and then let it go , what would happen to the stone? explain your answer.