Which type of electromagnetic energy must be used carefully in medicine so it does not damage living tissue?(1 point) low frequency waves
low frequency waves

visible light
visible light

radio waves
radio waves

gamma rays

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 equation2: 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!