Given that life on Earth appears to have arisen quite easily and rapidly suggests that the factor flife, in the Drake equation could be close to
A) 1
B) 0.25
C) 0
D) 0.5
A
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A 60.0-cm long string with a mass 8.00 g has a tension 200 N. What is the fundamental frequency of this string?
A) 38.7 Hz B) 1500 Hz C) 56.7 Hz D) 102 Hz E) 3.75 Hz
A very small source of light that radiates uniformly in all directions produces an electric field amplitude of 2.96 V/m at a point 33.0 m from the source. What is the power output from the source?
(c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T • m/A, ?0 = 8.85 × 10-12 C2/N • m2)
Secondary seismic waves travel ______________ primary waves in solids
a. in the direction opposite to the movement of b. slower than c. faster than d. at right angles to
The shortest distance between two points in flat Euclidean space is a
A) straight line. B) geodesic. C) neither of these