It is 6 km to Centerville, and you bicycle there in 20 minutes. Your speed is
A) 9 km/hr. B) 24 km/hr. C) 2 km/hr. D) 18 km/hr. E) 12 km/hr.
D
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Work-Energy Theorem: A stone is moving on a rough level surface. It has 24 J of kinetic energy, and the friction force on it is a constant 0.50 N. What is the maximum distance it can slide?
A. 2.0 m B. 12 m C. 24 m D. 48 m
There is a temperature at which the reading on the Kelvin scale is numerically:
A. equal to that on the Celsius scale B. lower than that on the Celsius scale C. equal to that on the Fahrenheit scale D. less than zero E. none of the above
Consider a situation where a skater pulls her arms inward, causing her rotation rate to speed up.Angular momentum __________ conserved
Fill in the blank(s) with correct word
The corona and chromosphere of the sun are believed to be heated by
a. shock waves rising from below the photosphere. b. the solar wind. c. sunspots. d. high energy particles being accelerated by the sun's magnetic field. e. differential rotation.