What is meant by the term free surface of a fluid?
What will be an ideal response?
The free surface of a fluid refers to the fact that the fluid is not constrained by a
container. Typically free surfaces are at the top where the fluid interfaces with
atmospheric air or another gas.
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List and describe four differences between Jovians and Terrestrials
What will be an ideal response?
A threaded steel rod (Es 5 210 GPa, dr 5 15 mm, ctes 5 12 3 1026/°C) is held stress-free between rigid walls by a nut and washer (dw 5 22 mm) assembly at each end. If the allowable bearing stress between the washer and wall is 55 MPa and the allowable normal stress in the rod is 90 MPa, the maximum permissible temperature drop ?T is approximately:
(A) 25 8C
(B) 30 8C
(C) 38 8C
(D) 46 8C
If the rotating coil used in a generator has its radius doubled, what change results in the amplitude of the voltage produced?
a. It doubles. b. It quadruples. c. It is increased by a factor 23/2 d. It stays the same.
The atomic nucleus contains
A) yogurt. B) protons only. C) neutrons and electrons. D) protons and neutrons. E) protons and electrons.