Which of these forms of energy is not renewable?
A) wind power
B) solar power
C) fossil fuel power
D) photovoltaic power
Answer: C
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Which of the following can't be associated with the spiral arms of a galaxy?
a. Dust and gas b. Metal poor stars c. Young, massive stars d. Star formation
In a mass spectrometer a particle of mass m and charge q is accelerated through a potential difference V and allowed to enter a magnetic field B, where it is deflected in a semi-circular path of radius R
The magnetic field is uniform and oriented perpendicular to the velocity of the particle. Derive an expression for the mass of the particle in terms of B, q, V, and R. A) qB2R2/V B) qB2R2/(2V) C) q2B2R2/V D) q2B2R2/(2V) E) qB2R2/(V2)
Determine the equivalent capacitance of the combination shown when C = 12 pF
a.
48 pF
b.
12 pF
c.
24 pF
d.
6.0 pF
e.
59 pF
Microscopic slush in water tends to make the water
A) more dense. B) less dense. C) slipperier. D) warmer.