Grade 8 week 2 help me answer this pls​

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

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 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 energy added you so much!

Select the correct answer. what does the process of natural selection involve?