The rule stating that the sum of two emitted frequencies in an atomic spectrum equals a third frequency is consistent with
A) momentum conservation.
B) energy conservation.
C) Planck's constant.
D) none of the above
Answer: C
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The Sun's structure is uniform throughout its interior, with no evidence of different layers
Indicate whether the statement is true or false
During the Dark Ages in Europe, the scientific work of the ancient Greeks was preserved and further developed primarily by scholars in
A) Baghdad. B) Greece. C) Rome. D) India. E) China.
A steady current of 0.15 A exists in a wire for 20 s
a. How much net charge passes by a point in the wire? b. How many electrons does this charge represent?
A toaster, sketched in the figure, has two heating elements on either side of a slice of bread when toasting the bread. The element temperature is 450ºC and its emissivity is 0.85 when bread is toasted. If the bread is at 100ºC, the bread’s emissivity is 0.65, and the surroundings reradiate heat, determine the net heat transfer to the bread.
What will be an ideal response?