Deoxyribonucleic acid (DNA) is a messenger molecule
Indicate whether the statement is true or false
False
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The range of frequencies that a radio telescope is sensitive to is referred to as its
A) sensitivity B) band C) bandwidth D) bandpass
The Michelson-Morley experiment was designed to make use of ________ to find the motion of the Earth relative to the luminiferous ether
a. sound waves b. interference fringes c. electromagnetic wind d. none of the above
By what factor is the self-inductance of an air solenoid changed if its length and number of coil turns are both multiplied by seven?
a. 1/7 b. 7 c. 1 d. 49 e. 1/49
If the shafts on the two gears shown in this figure had the same diameter, but were made of different materials, which shaft should be made of the stronger material to avoid breakage? (Hint: The torque exerted on each shaft must be the same as the torque on the gear to which it is attached.)
a. The shaft on the smaller gear since it must compensate for the smaller size of the gear. b. The torques on the two shafts will always be the same, so it does not matter. c. The shaft on the larger gear since it will have to withstand a greater torque.