Which mission landed closest to a crater named after the proponent of the Heliocentric Theory of the Solar System

In a closed system, the total energy prior to an energy transformation is the total energy after. a. equal to b. unrelated to c. greater than d. less than

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Which type of energy would have nothing to do with ironing clothes? a. heat b. chemical c. electrical d. mechanical