The law of reflection states that if the angle of incidence is 81 degrees, the angle of reflection is degrees.

Find the vertex(use the completing the square method), findthe x- and y-intercepts, and sketch the graph offunction. y = 2x2 + 4x - 1

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

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