In order to determine the distance and speed of moving objects, radar uses a. ocean waves b. sound waves c. electromagnetic waves d. radio waves

whats the answer? for sure

Option (D)

Explanation:

A Radar is usually defined as an electronic device that uses radio-waves of shorter wavelengths. As these waves are emitted by a transmitter, it strikes an object and goes back to the receiver. This helps in determining the speed and direction of an object, location and some other information that can be obtained regarding the object. These short microwaves are largely reflected from the surface of the objects such as aircraft, ships, and motor vehicles.

thus, the correct answer is option (D).

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