A block of mass 8.9 kg is suspended from a pulley via a light cord. The pulley has a mass of 6.8 kg and a radius of 19 cm. Treat the pulley as a disk. If the
block is initially at a height of 2 meters above the ground, how long does it
take to reach the floor?
Report your answer to three decimal places.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: 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 energy added you so much!