A galvanometer calibrated to read potential difference is
A) an ammeter.
B) a voltmeter.
C) an ohm meter.
D) none of the above
Answer: B
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It is a common misconception that the purpose of an astronomical telescope is to _______________ images
Fill in the blank(s) with correct word
If the radiation from the Sun reaching above atmosphere of Earth is at the rate of 1350 W/m2, what is the maximum value of the electric field associated with this wave?
A) 675.0 V/m B) 1604 V/m C) 1400 V/m D) 1350 V/m E) 1010 V/m
A charged particle moving with a certain velocity along the +x-axis enters a magnetic field pointing toward the +z-axis. Because of an electric field along the +y-axis the charge particle continues to move along the +x-axis
What is the sign of this particle? A) positive B) negative C) The particle could be either positive or negative. D) None of the other choices is correct.
G. Easterbrook(25) has said: "The population growth for the next 2 generations is 100 percent cast in stone. Nothing short of world pestilence or a nuclear war can halt population growth for the next 2 generations.
And with the growth in the world's population that is inevitable through the next 2 generations at least, global resource consumption is going to have to rise. That's the only possible moral outcome, so that millions of people don't die in misery. We're going to have to manage a short-term drastic increase in global resource consumption. And the only way we're going to be able to get through the night with that, is with strong environmental regulations and optimism about the success of reform in technology." Agree or disagree with Easterbrook, citing specific reasons.