What is electromagnetic
waves

waves that are created as a result of vibrations between an electric field and a magnetic field

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field.

Explanation:

In other word, EM waves are composed of oscillating magnetic and electric fields. They are also perpendicular to the direction of the EM wave. It can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples : radio wave, microwave,X-rays etc

Hope this will work to u

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.