A 4.0-kg aluminum block is originally at 10°C. If 160 kJ of thermal energy is added to the block, what is its final temperature? The specific heat capacity of aluminum is 910 J/kg ? K
A) 24°C
B) 34°C
C) 44°C
D) 54°C
D
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Energy in Capacitors: When a 6.00-?F air-filled capacitor has a charge of ±40.0 ?C on its plates, how much potential energy is stored in this capacitor?
A. 103 ?J B. 113 ?J C. 123 ?J D. 133 ?J E. 143 ?J
A capture by a target nucleus of uranium-235 is most apt to occur for which type of "bullet" particle?
a. low velocity alpha particle b. low velocity proton c. high velocity neutron d. low velocity neutron
If point A is located at coordinates (–10, 7) and point B is located at coordinates (8, –8), what is the distance from A to B if the units of the coordinated system are meters?
a. 549 m b. 23 m c. 28 m d. 33 m e. 26 m
For the following balanced reaction, which of the following is a gas?
2 Na(l) + Cl2(g) ? 2 NaCl(s) A) Na B) 2 Na C) Cl2 D) Cl E) NaCl