What charge accumulates on the plates of a 2.0-?F air-filled capacitor when it is charged until the potential difference across its plates is 100 V?
A) 50 ?C
B) 100 ?C
C) 150 ?C
D) 200 ?C
D
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Which type of binary can have their sizes measured directly by photometry?
A) virtual B) visual C) eclipsing D) spectroscopic E) astrometric
You could swallow a capsule of germanium, Ge (atomic number 32), without significant ill effects. If a proton were added to each germanium nucleus, however, you would not want to swallow the capsule because the germanium would
A) become arsenic. B) become radioactive. C) expand and likely lodge in your throat. D) have a change in flavor.
A U-238 nucleus (mass = 238 units) decays, transforming into an alpha particle (mass = 4.00 units) and a residual thorium nucleus (mass = 234 units). If the uranium nucleus was at rest, and the alpha particle has a speed of 1.50 × 10^7 m/s, determine the recoil speed of the thorium nucleus