What type of wave requires a medium to transfer energy?

Radio

Mechanical

Electromagnetic

Light

The relationship between frequency wavelength and speed holds for light waves because

What is the medium that sounds waves travel through when a person speaks

Is WET motorbike tyre insulator?

When was the first airplane made?

Which type of central heating system involves fans and ducts to circulate warm air?

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)