Which of the following values represents an index of refraction of an actual material?
a. 1 / 4
b. 5 / 4
c. 0
d. 1 / 2

Atomic nuclei of almost all elements consist of

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 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 energy added you so much!

Photons with the highest energy have the longest period