A standard exam page is 8.5 inches by 11 inches. An exam that is 2.0 mm thick has a volume of
a. 1.9 × 10^4 mm3.
b. 4.7 × 10^4 mm3.
c. 1.2 × 10^5 mm3.
d. 3.1 × 10^5 mm3.
e. 3.1 × 10^3 mm3.
c
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Einstein's principle of the constancy of lightspeed and principle of relativity are
A) assumptions which cannot be proven. B) the basic principles of his theory of relativity. C) Both of the above. D) Neither of the above. E) now known to be false at the microscopic level.
What is the molarity of a solution that contains 2 mol of solute in 4 L of solution?
A deuteron, with the same charge but twice the mass of a proton, moves with a speed of 6.0 × 10^5 m/s perpendicular to a uniform magnetic field of 0.20 T. Which of the paths described below would it follow? (qp = 1.6 × 10^-19 C and md = 3.34 × 10^-27 kg)
a. a circular path of 6.3-cm radius c. a circular path of 3.1-cm radius b. a circular path of 1.6-cm radius d. a straight line path
Venus has a higher average surface temperature than Mercury. Why?
A) because its surface is covered with hot lava from numerous active volcanoes B) because its slow rotation gives it more time to heat up in sunlight C) because it is closer to the Sun D) because its surface is heated by an extreme greenhouse effect