For the wave of light you generated in the part b, calculate the amount of energy in 1.0 mol of photons with that same frequency (1.2×1010 hz ) and wavelength (0.026 m ). recall that the avogadro constant is 6.022×1023 mol−1.

Use the table to answer question 22 23 and 24.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign