An example of an action at a distance force is
a. tension.
b. weight.
c. static friction.
d. kinetic friction.
e. none of the above
b
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What is a carbon star?
A) a red giant star whose atmosphere becomes carbon-rich through convection from the core B) a star that fuses carbon in its core C) another name for a white dwarf, a remnant of a star made mainly of carbon D) a star that produces carbon by fusion in its atmosphere E) a star that is made at least 50 percent of carbon
You are driving a late model convertible at the 55 mph limit with its soft ragtop roof up and the windows closed. You observe that the roof
A) bows inward. B) is not changed from when the car was at rest. C) bows outward. D) bows inward only when you are driving uphill. E) bows inward only when you are driving downhill.
Lightning occurs as water droplets in a cloud become electrically charged. Energy is positively charged
A) at the base of the cloud. B) at the top of the cloud. C) throughout the cloud. D) surrounding the cloud.
Free Fall: An astronaut on a strange new planet having no atmosphere finds that she can jump up to a maximum height of 27 m when her initial upward speed is 6.0 m/s. What is the magnitude of the acceleration due to gravity on the planet?
Fill in the blank(s) with the appropriate word(s).