5. What is the energy of a photon with a frequency of 5 x 10^14 Hz?
Planck's constant is 6.63 x 10^-34 J•s. *
O
1.33 x 10^-20 J
O
1.33 x 10^-19 J
O
3.31 x 10^-20 J
O
3.31 x 10^-19 J

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve