A 2000 kg car is traveling on a banked curved icy road without sliding. The velocity of the car is 30 m/s and the road is banked at an angle of 20.0 degrees. The radius of curvature of the road is
A. 175 m.
B. 204 m.
C. 252 m.
D. 302 m.
E. 375 m.
C. 252 m.
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The units of 1/4??0 are:
A) N2/C2 B) N?m/C C) N2?m2/C2 D) N?m2/C2 E) m2/C2
The diagram below shows two connected carts with different masses accelerating due to a constant force F. Which of the following statements is true.
A. The force of m2 on m1 is greater than F.
B. The force of m1 on m2 is equal to F.
C. The force of m1 on m2 is less than F.
At equilibrium on a bathroom weighting scale, the downward pull of gravity on you is balanced by
A) your weight. B) an upward support force. C) your mass.
Suppose that Al the physicist observes a single radioactive nucleus. The length of time until that particular nucleus decays is
A) unpredictable because of the practical difficulties of obtaining all the information needed to make the prediction. B) unpredictable because of fundamental uncertainties arising from quantum physics C) predictable from the known half-life of the nucleus. D) unpredictable because of fundamental uncertainties arising from Newtonian physics. E) predictable, provided Al knows the precise nuclear state of this nucleus.