Which statement supports the giant-impact hypothesis of the moon’s formation
the moon lacks a sizable iron core
the moon is covered with craters
the moons surface has changed dramatically over the past hundred million years
the moon has no mantel

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?

Could we see a galaxy that is 20 billion light-years away?