The distance from the center of a Ferris wheel to a passenger seat is 6.0 m. What centripetal acceleration does a passenger experience when the wheel rotates once every 4p seconds?
a. 16.9 m/s2
c. 3.0 m/s2
b. 9.0 m/s2
d. 1.5 m/s2
D
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Although solid matter is mostly empty space, we don't fall through the floor because
A) atoms are constantly vibrating, even at absolute zero. B) of nuclear forces. C) of gravitational forces. D) of electrical forces. E) none of the above
A gas expands from an initial volume of 30.0 L to a final volume of 65.0 L at a constant pressure of 110 kPa. How much work is done by the gas during this expansion?
A) 3.85 MJ B) 3.85 kJ C) 10.4 kJ D) 3850 kJ E) 10.4 MJ
Dark matter must be ____
a. baryonic b. non-baryonic c. neutral d. WIMPs e. isochronic
Graphical Analysis: An object is moving with constant non-zero acceleration in the +x direction. The velocity versus time graph of this object is
A. a horizontal straight line. B. a vertical straight line. C. a straight line making an angle with the time axis. D. a parabolic curve.