What is the period of revolution of a planet in circular orbit around a star of 4.0 solar masses if it is at a distance from the star equal to that of the Earth from the Sun?
0.50 year
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Constant Acceleration Kinematics: A car is traveling at 26.0 m/s when the driver suddenly applies the brakes, causing the car to slow down with constant acceleration. The car comes to a stop in a distance of 120 m. How fast was the car moving when it was 60.0 m past the point where the brakes were applied?
A. 22.5 m/s B. 18.4 m/s C. 15.0 m/s D. 12.1 m/s E. 9.20 m/s
A photoheterotroph gets its energy from
A) chemical reactions and its carbon from other organisms B) the Sun and its carbon from other organisms C) the Sun and its carbon from its environment D) chemical reactions and its carbon from its environment
Meredith sits in the middle of a merry-go-round that her brother Kiel is pushing. If Meredith moves to the outer edge of the merry-go-round, it will
A. speed up. B. slow down. C. spin at the same rate.
An amount of work equal to 2.0 J is required to compress the spring in a spring-gun. What is the "launch speed" of a 26.0-g marble?
a. 12.4 m/s b. 13.4 m/s c. 8.8 m/s d. 3.92 m/s e. 0.392 m/s