A human, running up stairs, can briefly use power of approximately
A. 0.01 horsepower
B. 0.1 horsepower
C. 0.2 horsepower
D. 1 horsepower
Answer: D. 1 horsepower
Physics & Space Science
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The ____________________ of a black hole is the radius from the black hole at which the escape velocity is equal to the speed of light
Fill in the blank(s) with correct word
Physics & Space Science
A CD has a diameter of 12.0 cm. If the CD is rotating at a constant angular velocity of 20.0 radians per seconds, then the frequency of the rotational motion is
A. 2.14 Hz. B. 3.18 Hz. C. 3.83 Hz D. 4.50 Hz. E. 4.89 Hz.
Physics & Space Science
Compared to a recoiling rifle, the bullet that is fired has a greater
A) momentum. B) kinetic energy. C) none of the above
Physics & Space Science
Halos are most often observed in the ____________ time of the year
a. spring b. summer c. fall d. winter
Physics & Space Science