According to Aristotle, the natural motion celestial objects exhibited was A. straight down
B. none of these
C. straight up
D. circular

Explain vector addition, triangle method and parallelogram method

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

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