If the diameter of a radar dish is doubled, what happens to its resolving power assuming that all other factors remain unchanged? Its resolving power
A)
quadruples.
B)
doubles.
C)
halves.
D)
is reduced to one-quarter its original value.
E)
is reduced to one-half its original value.
B
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____________________ is a measure of the amount of energy due to the motion of the particles in a gas, liquid, or solid
Fill in the blank(s) with correct word
Which of the following can change the frequency of a wave?
a. interference b. the Doppler effect c. diffraction d. all of the above
What beat frequency is produced by 240-Hz and a 246-Hz tuning forks?
A) 6 Hz B) 12 Hz C) 240 Hz D) 245 Hz E) none of the above
Suppose 39 g of reactant A is mixed with 40 g of reactant B. After a chemical reaction takes place between A and B, which statement is correct?
a. The total mass of products plus any unreacted reactants will be 79 g. b. The total mass of products plus any unreacted reactants will be less than 79 g. c. The total mass of products plus any unreacted reactants will be more than 79 g. d. The total mass of products will be 79 g.