Process of Science: How do observations of stars help us understand the theory of atomic nuclei?
What will be an ideal response?
Many nuclear reactions occur during the late stages of stellar evolution. By observing how stars evolve and the production of different elements, we can learn about how nuclei react.
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How deep under the surface of a lake would the pressure be triple that at the surface? (1 atm = 1.01 × 10^5 Pa)
a. 1.00 m c. 10.3 m b. 9.80 m d. 20.6 m
Light from the sun is illuminating a fish in the water. The sun is at 45° relative to a perpendicular to the water surface. What is the angle of the suns rays in the water relative to a perpendicular to the water surface?
What will be an ideal response?
If the velocity profile in a boundary layer was approximated by the linear distribution u = Ay + B , the boundary condition(s) that the profile would be required to satisfy is (are):
(A) (1) and (2)
(B) (1) and (3)
(C) (2) and (3)
(D) (1), (2), and (4)
The unit of power, watt, is dimensionally the same as:
a. joule-second. b. joule/second. c. joule-meter. d. joule/meter.