Which of these is an example of acceleration?

a. a car maintains a constant speed of 40 km/hr.
b. a car is parked on the side of the road.
c. a speeding car brakes to a stop.
d. a car maintains a constant speed of 100 km/hr.

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

Which sound characteristic is not affected by the relative motion of an object

What characteristics of hv2112 make it the best candidate to be classified as a thorne-zytkow object?