A 5.00-g lead bullet moving at 440 m/s penetrates a wood block and comes to rest inside the block. If half of its kinetic energy goes into heating the bullet, what is the bullet's change in temperature? The specific heat of lead is 128 J/(kg•K)
A) 94.0 K
B) 110 K
C) 126 K
D) 278 K
E) 378 K
E
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Capacitors in Combination: A 5.0-?F, a 14-?F, and a 21 ?F capacitor are connected in parallel. How much capacitance would a single capacitor need to have to replace the three capacitors?
A. 40 ?F B. 21 ?F C. 5.0 ?F D. 14 ?F
Light from Proxima Centauri takes 4.2 years to reach Earth
Indicate whether the statement is true or false
First Law of Thermodynamics: A cyclic process is carried out on an ideal gas such that it returns to its initial state at the end of a cycle, as shown in the pV diagram in the figure. If the process is carried out in a clockwise sense around the enclosed area, as shown on the figure, then the magnitude of the enclosed area represents
A. the heat that flows out of the gas. B. the work done on the gas. C. the heat added to the gas. D. the work done by the gas.
The rms value of the electric field component of an electromagnetic wave is 27.2 N/C. What is the maximum value of the electric field?
A) 38.5 N/C B) 19.2 N/C C) 27.2 N/C D) 47.4 N/C E) 52.8 N/C