A series of ocean waves are moving past a surfer at a frequency of 40 waves per hour. Approximately how many waves would the surfer expect during 48 minutes?
a. 1920 waves
b. 32 waves
c. 40 waves
d. 50 waves
Question 2
A diatomic molecule consists of two point masses, m1 and m2, separated by a distance r. If x is the distance from m1 to the center of mass, find the moment of inertia in terms of x about an axis perpendicular to the molecular axis through the center of mass.
a. 0
b. m1m2 r2/m1 + m2
c. m1(r x)2 + m2x2
d. m1x2 + m2(r x)2
e. m2x2 + m1r2
Extinction of species in the past.
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How many electrons flow past a given cross section of the wire in 10.3 min? electrons