An object that is 4.00 cm tall is placed 18.0 cm in front of a concave mirror having a focal length of 20.0 cm. What is the location of its image in relation to the mirror and what are its characteristics?
A) 20 cm on the same side of mirror, real, 10.0 times bigger
B) 180 cm on the other side of mirror, real, 6.00 times bigger
C) 18 cm on the same side of mirror, virtual, 2.25 times bigger
D) 10 cm on the other side of mirror, virtual, 10.0 times bigger
E) 180 cm on the other side of mirror, virtual, 10.0 times bigger
E
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A quantity that has both a magnitude and direction associated with it is called a __________
Fill in the blank(s) with correct word
Potential of Point-Charges: Two 5.0-µC point charges are 12 cm apart. What is the electric potential (relative to infinity) of this combination at the point where the electric field due to these charges is zero? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 0.75 MV B. 1.5 MV C. 0.0 MV D. 25 MV E. 12.5 MV
A spring scale typically indicates the magnitude of the tension force exerted on its bottom hook. What will the scale read in each of the cases shown in the diagram?
A. 49 N
B. 98 N
C. 196 N
D. Other (specify)
The Greek model of the atom should be classified as
A) a useful theory. B) a useless falsehood. C) an experimental fact. D) a tentative hypothesis. E) an observation.