Mike and Juan were studying forces and decided to do an experiment. they placed four
equally sized blocks made of different materials on an elevated plastic tray. They watched
each of the blocks move down the tray. their setup is shown in the picture.

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

If vx = 7.00 units and vy = -7.60 units, determine the magnitude of v⃗ . determine the direction of v⃗ .

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