How are both positively and negatively charged particles able to form in the same thunderstorm cloud?
What will be an ideal response?
The freezing of liquid droplets is believed to lead to the separation of charges, ice crystals favoring a positive charge and liquid droplets favoring a negative charge.
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An unfortunate bug splatters on the windshield of a moving car. Which of these is the same in magnitude for the bug and the windshield?
A. impulse. B. force. C. change in momentum. D. all of the above
A blue object will appear black when illuminated with
A) blue light. B) cyan light. C) yellow light. D) light. E) none of the above
Geographies of consumption are limited to the shopping mall
Indicate whether the statement is true or false
Four companies, Alpha, Beta, Gamma and Delta, are burning coal to produce electricity. As a result, they also produce emissions. The first row of the table below shows the total pounds of emissions currently produced by each firm. The other rows of the table show the cost for each firm of reducing emissions by the first 50 tons, the second 50 tons, and so on. The government wants to reduce emissions by one third, and does so by issuing marketable permits based on the current level of emissions where the permits will shrink the allowable amount of pollution by one third. Alpha will reduce emissions by ____ tons, Beta will reduce emissions by ____ tons, Gamma will reduce emissions by ____ tons, Delta will reduce emissions by ____ tons, for a total cost of ____.
A. 50, 150, 50, 250, $130 B. 50, 200, 0, 250, $150 C. 0, 200, 50, 250, $120 D. 50, 200, 50, 200, $100