The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire?
A) It stays the same.
B) It is 2 times as large.
C) It is 4 times as large.
D) It is ½ as large.
E) It is ¼ as large.
D
You might also like to view...
According to the principle of relativity, an observer who has no communication with the world outside of her laboratory will be unable to detect
A) her laboratory's acceleration. B) her laboratory's velocity. C) Both of the above. D) gravity. E) All of the above.
If you lift a 15-N weight vertically 30 m above the ground, you are
a. doing work against gravity. b. doing work against friction. c. doing work against inertia. d. doing none of these.
Spiral arms are clearly visible features of galaxies because most sun-like stars in the disk are found there
a. True b. False Indicate whether the statement is true or false
Hubble's law can be applied to measure the distance of the constellation of Orion.
Answer the following statement true (T) or false (F)