1. Calculate the weight of a person with a mass of 67.0 kg on the earth (g = 9.80 m/s2) and on Mars (g = 3.71 m/s2). Use this example to describe the differences between mass and weight.

Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation

Does heating a metal wire increase or decrease its electrical resistance? why?

What energy transformations occur each time the skateboarder rolls up the ramp?