Which statement could be considered a scientific theory?
a. Beauty pageant contestants are becoming increasingly more beautiful.
b. Chemistry and physics are more exact sciences than biology.
c. Change occurs in the inherited traits of a population over generations.
d. The growth of a plant is faster in a growth chamber than in a greenhouse.
e. Leaves bend toward the light because they know light is needed to grow.
c
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Determine the resistance R when I = 1.5 A
a.
40 ?
b.
8.0 ?
c.
85 ?
d.
28 ?
e.
32 ?
Clocks in a moving reference frame, compared to identical clocks in a stationary reference frame, appear to run
A. backward in time. B. slower. C. faster. D. at the same rate.
If the velocity versus time graph of an object is a straight line making an angle of 30 degrees with the time axis, the object is
A) moving with constant non-zero speed. B) moving with constant non-zero acceleration. C) at rest. D) moving with infinite speed. E) none of the above
Data on binary galaxies is analyzed to determine their average masses under the assumption that they, like binary stars, have ________ orbits
Fill in the blank(s) with correct word