What best describes the relationship between wavelength and frequency in an electromagnetic wave? always equal

Need in all of themmm only answer if you know pls

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!

The radius of an atom is closest in size to a