Which solute graphed above has a solubility in water that does not markedly increase with increasing temperature?
A) NaNImage
B) LiCl
C) KCl
D) NaCl
Answer: D
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The center of mass (or center of gravity) of a two-particle system is at the origin. One particle is located at (3.0 m, 0.0 m) and has a mass of 2.0 kg. The other particle has a mass of 3.0 kg. What is the location of the 3.0-kg particle?
A) (-3.0 m, 0.0 m) B) (-2.0 m, 0.0 m) C) (2.0 m, 0.0 m) D) (3.0 m, 0.0 m)
A linear charge of nonuniform density ? = bx, where b = 2.1 nC/m2, is distributed along the x axis from x = 2.0 m to x = 3.0 m. Determine the electric potential (relative to zero at infinity) of the point y = 4.0 m on the y axis.
A. 36 V B. 95 V C. 10 V D. 17 V E. 15 V
Which of these are English units?
a. seconds b. feet c. kilometers d. slugs
As the solar nebula contracts due to gravitation, the cloud
A) spins faster. B) expands. C) becomes more spherical in shape. D) changes direction of motion. E) begins to cool.