The idea that atoms radiate energy only when their electrons move from higher to lower energy levels was first advanced by: Group of answer choices Albert Einstein Ernest Rutherford J. J. Thomson Niels Bohr Christian Doppler

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?