A student enters a parking lot and walks toward the north in a parking lot at a velocity of 1.20 m/s for 50.52 seconds. He then turns to the west and runs at a pace for 3.56 m/s for 25.44 seconds.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

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