A car moving at a steady 10 m/s on a level highway encounters a bump that has a circular cross-section with a radius of 30 m
The car maintains its speed over the bump. What is the force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump?
A) 200 N
B) 390 N
C) 790 N
D) 490 N
E) 590 N
B
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A very efficient engine has the following characteristics - combustion
exhaust 
cal of fuel produces
of work in one hour. What is the output in hp?
A. 5.2 hp B. 8.1 hp C. 7.3 hp D. 6.3 hp
The Sun's photosphere is, by mass, about 25%
a. helium. b. carbon. c. hydrogen. d. oxygen.
Edwin Hubble first found the distance to M31 in Andromeda with its ________ variable stars in its spiral arms
Fill in the blank(s) with correct word
The Milky Way galaxy is
A) in the process of colliding with the Magellanic Cloud galaxies. B) where Earth resides. C) a spiral galaxy. D) All of the above