Are the Sun and the Moon ever above the horizon at the same time?
A. yes, always
B. no, never
C. yes, sometimes
D. The moon always rises as the sun sets.
Answer: C
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The main process by which heat flows upward through the lithosphere is
A) conduction. B) convection. C) radiation. D) accretion. E) differentiation.
A 1.0 kg mass is connected to a spring with a spring constant of 9.00 N/m. If the initial velocity is 0.0 cm/s and the initial displacement is 2.0 cm, then what is the maximum kinetic energy of the simple harmonic motion?
A. 0.014 J B. 0.0090 J C. 0.0075 J D. 0.0018 J E. 0.0012 J
A Venturi tube may be used as the inlet to an automobile carburetor. If the 2.0-cm diameter pipe narrows to a 1.0-cm diameter, what is the pressure drop in the constricted section for an airflow of 3.0 m/s in the 2.0-cm section? (? = 1.2 kg/m3.)
a. 70 Pa b. 85 Pa c. 100 Pa d. 120 Pa e. 81 Pa
Which statements are true for an electron moving in the direction of an electric field? (There may be more than one correct choice.)
A) Its electric potential energy increases as it goes from high to low potential. B) Its electric potential energy decreases as it goes from high to low potential. C) Its potential energy increases as its kinetic energy decreases. D) Its kinetic energy decreases as it moves in the direction of the electric field. E) Its kinetic energy increases as it moves in the direction of the electric field.