A volume of helium gas has a temperature of 10°C. The same gas twice as hot has a temperature of
A) 20°C.
B) 12°C.
C) 283°C.
D) 293°C.
E) none of the above
Answer: D
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How many oxide ions (O-2) are needed to balance the positive charge of a titanium ion (Ti+4)?
A) 2 B) 1 C) 3 D) 4 E) 6
Suppose the date is June 21 and the Sun never sets, just touching your northern horizon at midnight. Where are you?
A) the equator B) the Tropic of Cancer (latitude 23-1/2°N) C) the Tropic of Capricorn (latitude 23-1/2°S) D) the Arctic Circle (latitude 66-1/2°N) E) the Antarctic Circle (latitude 66-1/2°S)
A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder.
A. 20 N/C B. 27 N/C C. 16 N/C D. 12 N/C E. 54 N/C
When ImagePo emits a beta particle, it transforms into a new element. What are the atomic number and atomic mass of this new element?
A) atomic number = 84; atomic mass = 219 B) atomic number = 86; atomic mass = 214 C) atomic number = 85; atomic mass = 218 D) atomic number = 82; atomic mass = 214