A ball is subjected to a pressure of 25.0 atmospheres. The un-squeezed diameter of the ball is 4.00 cm. The squeezed diameter of the ball is 3.99 cm. The bulk strain on the ball is
a.
b.
c.
d.
e.
d.
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A major source of chlorine gas, Cl2, is from the electrolysis of brine, which is concentrated salt water, Which of the following is the balanced chemical reaction for this electrolysis reaction?
A. 2 NaCl (aq) + H2O ? 2 NaH (aq) + Cl2O (aq)
B. 2 NaCl (aq) + 2 H2O ? 2 Na (s) + O2 (g) + 2 H2 (g) + Cl2 (g)
C. 2 NaCl (aq) + H2O ? Na2O (aq) + 2 HCl (aq)
D. 2 NaCl (aq) + 2 H2O ? 2 NaOH (aq) + Cl2 (g) + 2 H2 (g)
Which is true of the troposphere on Earth?
A) It is the lowest layer in the atmosphere, in which convection occurs. B) It is the region of the atmosphere that absorbs ultraviolet light from the Sun. C) It is the region of the atmosphere that absorbs x-rays from the Sun. D) It is the highest layer in the atmosphere, marking the boundary with space.
Which of the following is not an advantage of the Hubble Space Telescope over ground-based telescopes?
A) It never has to close because of cloudy skies. B) Stars do not twinkle when observed from space. C) It is closer to the stars. D) It can observe infrared and ultraviolet light, as well as visible light.
Determine the shape factors F1-2, F1-3, F2-1, and F3-1 between the surfaces shown in the figure.