PLEASe Help!! A block of gold has the dimensions: length 5cm, width 3cm and height 1cm and weighs 40.5g. What is its density?

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

The necleus of an atom is made up of what subatomic particles?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration