One kilogram of peaches has more skin area than one kilogram of
A) blueberries.
B) grapefruits.
C) grapes.
D) all of the above
Answer: B
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Which one of the following quantities can be measured by performing a Hall effect measurement?
a) magnetic monopole strength b) charge of the electron c) number density of charge carriers d) acceleration of an electron e) work function
Briefly explain why radiation was trapped for 380,000 years during the era of nuclei, and why the cosmic background radiation was formed at the end of this era
What will be an ideal response?
Star A has a temperature 3 times that of star B. Both star A and star B are the same physical size. Which statement about star A and star B below is correct?
A) Star A is redder and dimmer than star B. B) Star A is bluer and dimmer than star B. C) Star A is redder and brighter than star B. D) Star A is bluer and brighter than star B. E) Star A and star B have the same color, but star A is brighter.
Diffraction Gratings: A diffraction grating with 396 lines/mm is illuminated with light of wavelength 343 nm. What is the angular separation between the two second-order bright fringes?
A. 31.5° B. 15.8° C. 32.9°