Mechanical waves require a to travel through but electromagnetic waves can travel through empty space.

This question is worth 54 points ! rock falls from a ledge to the ground what energy conversion occurs during this process a potential to kinetic b kinetic to potential c thermal to mechanical d chemical to mechanical

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e