Which of the following molecules would you expect to be the most strongly attracted to a Cl- ion?
A) H-F
B) H3C-CH3
C) Cl-Cl
D) F-F
E) CCl4
Answer: A
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In what way is the rocky material of Jupiter's core different from the rocks found on Earth?
a. It is much cooler because Jupiter is further from the sun. b. It contains more liquid water. c. It is much hotter and denser because of the extreme pressure at the core of Jupiter. d. It is not composed of iron and nickel because this material will float of the surface e. It is composed entirely of ices that have frozen into a large rock like structure.
An aluminum cantilever beam (E 5 72 GPa) with a square cross section and span length L 5 2.5 m is sub- jected to uniform load q 5 1.5 kN/m. The allowable bending stress is 55 MPa. The maximum deflection of the beam is approximately:
(A) 10 mm
(B) 20 mm
(C) 30 mm
(D) 40 mm
The Kelvin form of the second law of thermodynamics states that
A. an engine can take heat from a single reservoir and convert it all to work B. no engine can take heat from a single reservoir and convert it all to work C. an engine can have a greater efficiency than a Carnot engine
The area and the number of turns in a loop of wire are doubled. Assuming that all the other parameters remain the same, what happens to the induced emf in that loop of wire?
A) It is doubled. B) It is reduced by a factor of 2. C) It is reduced by a factor of 4. D) It is quadrupled. E) It stays the same.