The orbits of Population II stars have been compared to:
A) planets around the Sun.
B) satellites around planets.
C) comets around the Sun.
D) binary stars.
E) the accretion disk around a black hole.
C
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Energy in Capacitors: An air-filled parallel-plate capacitor is constructed with a plate area of 0.40 m2 and a plate separation of 0.10 mm. It is then charged to a potential difference of 12 V? (?0 = 8.85 × 10-12 C2/N ? m2)(a) How much charge is stored on each of its plates?(b) How much energy is stored in it?
What will be an ideal response?
Nimbus means
a. "poorly formed.". b. "curl.". c. "heap.". d. none of these.
If R = 4.0 k?, C = 3.0 mF, ? = 15 V, Q = 12 mC, and I = 2.0 mA, what is the potential difference Vb?Va?
A. +3.0 V B. ?19 V C. ?3.0 V D. +27 V E. +21 V
A deuteron is captured by an oxygen-16 atom which in turn emits a proton. What is the element and mass number of the product isotope?
a. oxygen-15 c. nitrogen-15 b. fluorine-15 d. oxygen-17