A toddler pushed a 4-kg toy car at a constant speed against a ground frictional force of 8 N. Then, the toddler pushed the toy car with the same force on a marble ground with no frictional
force against the toy car, what is the acceleration (in m/s2) of the toy car?
A. 0
B. 1
C. 2
D. 4

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

The law of reflection states that the angle of reflection is equal to the angle of

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem