How many molecules are in 1.00 mol of sulfur dioxide, SO2?
a. 64.1
b. 64.1 × 6.02 × 10^23
c. 12.0 × 10^23
d. 6.02 × 10^23
d
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A 0.12-m-radius grinding wheel takes 6.0 s to speed up from 2.0 rad/s to 11.0 rad/s. What is the wheel's average angular acceleration?
a. 5.6 rad/s2 b. 0.22 rad/s2 c. 1.5 rad/s2 d. 0.080 rad/s2
The core of a highly evolved high mass star is a little larger than
A) our solar system. B) our Sun. C) Jupiter. D) Earth. E) a white dwarf.
What does it mean for a physical quantity in a system to be conserved?
a. It is used in the most efficient manner possible. b. It stays in its original state forever. c. The total amount of it in the system stays constant. d. none of the above.
Two harmonic waves traveling in opposite directions interfere to produce a standing wave described by y = 3sin(2x)cos(5t), where x is in m and t is in s. What is the wavelength of the interfering waves?
a. 3.14 m b. 1.00 m c. 6.28 m d. 12.0 m e. 2.00 m