What is the monolithic collapse hypothesis unable to explain?
a. The randomly oriented, elongated orbits of stars in the bulge and halo
b. The circular motion of stars in the galactic disk
c. The difference in metallicity between the spherical component and the disk component of the galaxy
d. The elongated bar shape of the central bulge
e. The low density of material in the halo, compared to the central bulge
d
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A monel shell (Em 5 170 GPa, d3 5 12 mm, d2 5 8 mm) encloses a brass core (Eb 5 96 GPa, d1 5 6 mm). Initially, both shell and core are a length of 100 mm. A load P is applied to both shell and core through a cap plate. The load P required to compress both shell and core by 0.10 mm is approximately:
(A) 10.2 kN
(B) 13.4 kN
(C) 18.5 kN
(D) 21.0 kN
The portrayal of nearly all aliens in movies and on TV as being humanoid is
A) based on the fact that it would be impossible for us to understand anything that wasn't very similar to a human B) realistic because the human form has several unique qualities that make it a good choice for any advanced civilization C) based on the fact that the human form is the only possible form for an advanced civilization D) probably unrealistic because the human form is most likely a result of the particular conditions and events that occurred on the Earth
If two machines have the same first-law efficiency, they must also have the same second-law efficiency
What will be an ideal response?
If during a given physical process the only force acting on an object is friction, which of the following must be assumed in regard to the object's kinetic energy?
a. decreases c. remains constant b. increases d. cannot tell from the information given