An object weighs 42.53 newtons. what is its mass if a gravitometer indicates that g = 9.83 m/s2? round to the nearest tenth.

Write the correct abbreviation for each metric unit

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

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final