2. Given the situation below, solve for the force of friction (parallel force) and the normal force (perpendicular force) acting on the box. The box is 30 Kg and being pulled up a 10° slope at
constant velocity with 200 N of force by a rope at a 30° angle relative to the slope.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

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!

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%