The energy of a given wave in the electromagnetic spectrum is 2.64 × 10-21 joules, and the value of planck’s constant is 6.6 × 10-34 joule·seconds. what is the value of the frequency of the wave?
4.00 × 1012 hertz
2.34 × 10-12 hertz
1.30 × 1013 hertz
2.52 × 10-6 hertz
8.11 × 10-7 hertz
20 points +

Due sun 06/09/2019 11: 59 pm skip navigation questions correct q 1 [1/1] correct q 2 [1/1] correct q 3 [1/1] untried q 4 (0/1) untried q 5 (0/1) untried q 6 (0/1) untried q 7 (0/1) untried q 8 (0/1) untried q 9 (0/1) untried q 10 (0/1) grade: 3/10 print version start of questions two cyclists, 42 miles apart, start riding toward each other at the same time. one cycles 2 times as fast as the other. if they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist?