If the average intensity of the sunlight in Miami, Florida, is 1040 W/m2,
what is the average value of the radiation pressure due to this sunlight on a black totally absorbing asphalt surface in Miami? (c = 3.00 × 108 m/s)
A) 2.28 × 10-6 N/m2
B) 9.78 × 10-6 N/m2
C) 7.83 × 10-6 N
D) 1.63 × 10-6 N/m2
E) 3.47 × 10-6 N/m2
E
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A sound wave in a metal bar is an example of a longitudinal wave
a. True b. False Indicate whether the statement is true or false
What is the purpose of a "star shade" in efforts to directly detect extrasolar planets?
A) The star shade blocks light from the central star, so planets can be seen. B) The star shade cools the star, so it does not emit so much contaminating light. C) The star shade keeps the telescope cooler, so it does not emit as much infrared light. D) The star shade changes the wavelength of starlight, so it is easier to distinguish from planet light. E) The star shade separates starlight from planet light based on temperature.
In the above model of an atom, where is the neutron located, assuming a neutron is present?
a. A
b. 1
c. 2
d. 3
The prime meridian (where longitude equals zero) passes through:
A. Paris. B. Beijing. C. New York. D. Greenwich.