The speed of light is given by the value of
A.
B.
.C.
.D.
.E.
.Answer: C
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You want to swim straight across a river that is wide. You find that you can do this if you swim at an angle of ? = 28° from the upstream direction at a constant rate of relative to the water
At what rate does the river flow? The angle ? is measured from the river bank (directly upstream is while directly across the river is A) 1.3 m/s B) 0.70 m/s C) 1.6 m/s D) 1.8 m/s
The blue stragglers represent the horizontal branch for globular clusters
Indicate whether the statement is true or false
Applications to Astronomy: Many supernovas are thought to result in
A. neutron stars. B. red giant stars. C. regular stars like our sun. D. white dwarfs.
Two resistors of values 7.0 and 15.0 ? are connected in parallel. This combination in turn is hooked in series with a 3.8-? resistor and a 22.3-V battery. What is the current in the 3.8-? resistor?
a. 21 A b. 2.6 A c. 0.86 A d. 5.9 A e. 190 A