Which of the following compounds would least likely act as an acid?

A) SO4-2
B) HSO4-1
C) H2SO4
D) NH3
E) CH3CO2H


Answer: A

Physics & Space Science

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A polarizer (with its preferred direction rotated 30° to the vertical) is placed in a beam of unpolarized light of intensity 1. After passing through the polarizer, the beam's intensity is

A) 0.2501. B) 0.7501. C) 0.5001. D) 0.8661. E) 0.5000.

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Capacitance: If the result of your calculations for a quantity has SI units of C2 ? s2/(kg ? m2), that quantity could be

A. an electric potential difference. B. a dielectric constant. C. an electric field strength. D. a capacitance. E. an electric potential energy.

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The limiting angle of resolution for the eye is 1.4 × 10-4 rad. What is the minimum separation between two point sources of light that the eye can distinguish if they are at a distance of 40 m from the observer?

A) 2.8 × 10-3 m B) 5.6 × 10-3 m C) 1.4 × 10-3 m D) 8.4 × 10-3 m E) 4.7 × 10-3 m

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A modern geologic theory that considers Earth's lithosphere to be made up of moving plates is known as

a. the principle of uniformity. b. the law of superposition. c. the Moho concept. d. plate tectonics.

Physics & Space Science