How does energy move in relation to the medium in a longitudinal wave?

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?