the diagram shows three beakers with water . The first beaker has a block of cork in it . The second beaker has a block of wood in it . The block in the third beaker is made of steel . which of the following has the highest density ?

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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