Surface waves fits that description.
Answer:
Part (a) The magnitude of the deflection of electron beam on the screen due to the Earth's gravitational field is 5.97*
m.
Part (b) The magnitude of the deflection of electron beam on the screen due to the vertical component of the Earth's magnetic field is
m
3.1 the only reason i know this is cause i got it wrong
From T = 2π√(l/g).
Since the lengths are the same, so that is a constant.
T α 1/√g
So the period T is inversely proportional to the square root of gravity g.
So the one with a bigger gravity g would have a shorter period
and
the one with smaller gravity g would have a longer period.
Therefore the period on the Moon with gravity of 1.63 m/s² would be longer period than that on the Earth with gravity of 9.81 m/s²