Force is determined by multiplying mass and gravity (F= mg). To determine the answer, the mass of the elephant (5600 kg) is multiplied with the gravity (9.8 m/s²). The answer is 5800 N. This is the upward gravitational force that the elephant exerts on the earth.
Its during REM sleep. hope this helped
Refraction is the change in direction of a wave.
Diffraction is the bending of a wave around a barrier.