Two horizontal curves on a bobsled run are banked at the same angle, but one has twice the radius of the other. The safe speed (no friction needed to stay on the run) for the smaller radius curve is V
Therefore, the safe speed on the larger radius curve is A) 0.71 V.
B) 0.10 V.
C) 1.4 V.
D) 0.5 V.
E) 2. V.
C
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Calculate the minimum average power output necessary for a person to run up a 12.0 m long hillside, which is inclined at 25.0° above the horizontal, in 3.00 s. You can neglect the person's kinetic energy
Express your answer in horsepower. (1 hp = 746 W) A) 1.24 hp B) 2.93 hp C) 1.86 hp D) 0.740 hp
The glare seen from water in a lake is largely
A) horizontally polarized. B) vertically polarized. C) nonpolarized.
In organic molecules, a sulfur atom will normally form how many bonds?
a. 0 b. 1 c. 2 d. 3 e. 4
The continuous part of an x ray spectrum of an atom occurs because
a. of photon absorption b. of the photoelectric effect c. electrons in the atom make transitions to lower energy levels d. of the uncertainty principle e. of rapid deceleration of the bombarding electrons