Two mirrors are at right angles to one another. If an object is placed near the mirrors, what is the largest number of images that would be seen in the mirrors?
a. 3
b. 2
c. 4
d. 5
e. 6
A
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The open universe would require ?o be less than zero
Indicate whether the statement is true or false
A metal sphere of radius 10 cm carries a charge of +2.0 ?C. What is the magnitude of the electric field 5.0 cm outside the sphere's surface?
A) 4.0 × 105 N/C B) 8.0 × 105 N/C C) 4.2 × 106 N/C D) 4.0 × 107 N/C E) 8.0 × 107 N/C
As the Moon and Earth pull on one another, the oceans bulge about 1m on opposite sides of the Earth. In Earth's daily rotation, the area that passes the bulge experiences high tide. The time of the high tides fluctuates because
A) not all areas of Earth use daylight savings time. B) while Earth spins on its axis, the Moon orbits the Earth—the timing is a bit off. C) as Earth spins on its axis, the Moon spins on its own axis—the timing is a bit off.
A particle of light is called a ________________
Fill in the blank(s) with correct word