At the time of the summer solstice, in the United States,
a. the number of hours of daylight is greater than the number of hours of darkness.
b. the number of hours of daylight is equal to the number of hours of darkness.
c. the number of hours of daylight is less than the number of hours of darkness.
d. none of the above is true.
a
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A solid uniform cylinder is rolling without slipping. What fraction of its kinetic energy is rotational?
A) 1/4 B) 2/3 C) 1/3 D) 1/2 E) 3/4
Resistance and Resistivity: A certain metal has a resistivity of 1.68 × 10-8 ? ? m. You have a long spool of wire made from this metal. If this wire has a diameter of 0.15 mm, how long should you cut a segment so its resistance will be 15 ??
A. 16 mm B. 16 cm C. 1.6 m D. 16 m
When Copernicus first created his Sun-centered model of the universe, it did not lead to substantially better predictions of planetary positions than the Ptolemaic model. Why not?
What will be an ideal response?
Two ways that the internal energy of a substance can be increased are __________ and __________
Fill in the blank(s) with correct word