Acar traveling 65 miles per hour has kinetic energy because of its position on the road, true or false

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?

Why do atoms emit energy of only specific wavelengths