1. A spring gun initially compressed 2 cm fires a 0.01 kg dart straight up into the air. If the dart reaches a height of 5.5 m, determine the spring constant of the dart gun. PLEASE HELP!

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

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!

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.