Which of these is an example of acceleration? A) a bicyclist turning around a corner
B) a car traveling south with its cruise control set
C) a bus traveling north at 25m/s
D) a helicopter waiting to take off

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

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

True or false graphs must include scales that increase by the same amount