Viewed from Pluto, the Sun would appear more than a thousand times fainter than on Earth
Indicate whether the statement is true or false
TRUE
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For simplicity, a professor uses 9.8 (meters per second) per second for the acceleration due to gravity instead of the more precise 9.81 (meters per second) per second. If Cavendish had made the same approximation, his estimate for Earth's mass have been
A. too high B. too low
A split highway has a number of lanes for traffic. For traffic going in one direction, the radius for the inside of the curve is half the radius for the outside. One car, car A, travels on the inside while another car of equal mass, car B, travels at equal speed on the outside of the curve. Which statement about resultant forces on the cars is correct?
a. The force on A is half the force on B. b. The force on B is half the force on A. c. The force on A is four times the force on B. d. The force on B is four times the force on A. e. There is no net resultant force on either as long as they stay on the road while turning.
Which of the following statements is true?
a. A hot object contains a lot of heat. c. Objects do not contain heat. b. A cold object contains only a little heat. d. Statements a and b are true.
Determine the heat transfer per unit area for pool boiling water at 200 kPa and where the surface temperature of the container is 135ºC. Compare results using Equation 10-4 to those using Equation 10-6. Assume a surface tension of 45 mN/m for water at 200 kPa.
What will be an ideal response?