The specific heat capacity of aluminum is more than twice that of copper. Place equal masses of aluminum and copper wire in a flame and the wire to heat up quickest will be
A) copper.
B) aluminum.
C) both the same
Answer: A
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__________ show(s) that some quasars are further away than distant galaxies and that space time is curved by massive objects
a. Double-lobed radio galaxies b. Blazars c. The gravitational lens effect d. Head-tail galaxies e. Superluminal expansion
A two-slit arrangement with 60.3 ?m separation between the slits is illuminated with coherent light. If a viewing screen is located 2.14 m from the slits,
find the distance from the first dark fringe on one side of the central maximum to the second dark fringe on the other side. A) 52.3 mm B) 34.9 mm C) 69.7 mm D) 24.6 mm
Chromium-55 (54.9408 u) emits an electron leaving a daughter nucleus of manganese-55 (54.9380 u). How much energy is released in this reaction? (1 u = 931.5 MeV/c2)
a. 2.61 MeV c. 5.59 MeV b. 0.70 MeV d. 1.40 MeV
What is the potential difference VB ? VA when the I = 1.5 A in the circuit segment below?
a.
+22 V
b.
?22 V
c.
?38 V
d.
+38 V
e.
+2.0 V