Two carbon cylinders have radii r and 2r and they both have length L. What is the resistance of the first if the resistance of the second is 12
?
A. 48 
B. 12
C. 24
D. 3
E. 6
A. 48
You might also like to view...
In terms of momentum, why is a drinking glass less likely to break if it falls on a carpeted floor than falling on a hard concrete floor?
What will be an ideal response?
Graphs of the first four standing waves in a closed organ pipe are shown in this figure. If the organ pipe were closed at both ends, how would the pattern of harmonics differ from the situation depicted in the figure?
a. All the harmonics occur when the organ pipe is closed at both ends. b. The same occurs as shown in the figure, i.e., the even harmonics are missing. c. The same occurs as shown in the figure, i.e., the odd harmonics are missing.
Projectile Motion: An athlete competing in the long jump leaves the ground with a speed of 9.14 m/s at an angle of 35° above the horizontal. How long does the athlete stay in the air, assuming no significant air resistance?
A. 0.50 s B. 0.88 s C. 1.1 s D. 2.5 s E. 0.54 s
The surface of Mercury resembles the Moon's surface in that they are both ________.
A. covered with volcanoes B. eroded by wind C. heavily cratered D. newly resurfaced