What happens to an atom of a particular element if it somehow loses a proton?
A. It becomes more positive.
B. A new element is formed.
C. It automatically loses an electron too.
D. A nearby neutron turns into a proton to replace it.

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

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