What do radio waves and microwaves have in common

Explanation:

Radio waves and microwaves are both electromagnetic waves. This means that they are composed of vibrating electric and magnetic fields. They both have long wavelength on the end of the electromagnetic spectrum. They are useful in wireless technology to transmit information.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.