Homework answers / question archive / Q4) If the amount of carbon dioxide in the atmosphere is increasing with time, should we expect an increase in the average global temperature? Explain

Q4) If the amount of carbon dioxide in the atmosphere is increasing with time, should we expect an increase in the average global temperature? Explain

Physics

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Q4) If the amount of carbon dioxide in the atmosphere is increasing with time, should we expect an increase in the average global temperature? Explain.

Q5. Has the burning of fossil fuels been taking place on a significant scale over many thousands of years? Explain.

Q2. Suppose we choose inches as our basic unit of distance and days as our basic unit of time.

• What would the units of velocity and acceleration be in this system? Explain.
• Would this be a good choice of units for measuring the acceleration of an automobile? Explain.

Q4. A tortoise and a hare cover the same distance in a race. The hare goes very fast for brief intervals, but stops frequently, whereas the tortoise plods along steadily and finishes the race ahead of the hare.

• Which of the two racers has the greater average speed over the duration of the race? Explain.
• Which of the two racers is likely to reach the greatest instantaneous speed during the race? Explain.