An 800 N person is lifted a distance of 75 cm. Calculate the amount of work done in Joules. Show your work. Include proper units in your answer.

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

For which pair of objects would adding the same a

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is