A food calorie is a kilocalorie in SI units. What would be the speed of a 1000 kg car traveling such that its kinetic energy is equal to the energy contained in one 250-calorie jelly doughnut?
A. 46 m/s
B. 65 m/s
C. 32 m/s
D. 22 m/s
A. 46 m/s
Physics & Space Science
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Given a concave mirror, rays of light originating from the center of curvature reflect off the mirror and focus at
A) 2 R from the mirror. B) the focal point. C) the center of curvature. D) infinity.
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Because of its small size, the surface of Pluto was found by New Horizons to be old and geologically dead
Indicate whether the statement is true or false
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White dwarfs lie on the lower left portion of the H-R diagram
Indicate whether the statement is true or false
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Find the pressure in atmospheres in the water at the base of Dworshak Dam if the water in the reservoir is 200 meters deep. (1.01 × 10^5 N/m2 = 1 ATM.)
a. 20.4 ATM b. 24.7 ATM c. 29.4 ATM d. 194 ATM e. 75 ATM
Physics & Space Science