An object 2.0 cm in height is placed at the center of curvature C in front of a concave mirror. What is the height of its image?
A) -0.50 cm
B) -1.0 cm
C) -1.5 cm
D) -2.0 cm
E) -6 cm
D
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What is the self-inductance of a solenoid 30.0 cm long having 100 turns of wire and a cross-sectional area of 1.00 × 10-4 m2? (?0 = 4? × 10-7 T ? m/
A) A) 4.19 nH B) 4.19 pH C) 4.19 µH D) 4.19 mH E) 4.19 H
The principal difference between a gas and a plasma has to do with
1) the kinds of elements involved, 2) interatomic spacing, 3) electrical conduction, 4) fluid pressure, 5) the proportion of antimatter, while the principal difference between a liquid and a gas has to do with 6) the kinds of elements involved. 7) interatomic spacing. 8) electrical conduction. 9) fluid pressure. 10) the proportion of antimatter.
A long horizontal wooden beam supported at its ends sags when you sit in the middle. Due to bending, the top part of the beam is under
1) tension. 2) compression. And the bottom of the beam is under 3) tension. 4) compression. And the part of a beam where no tension or compression occurs 5) along the center of the beam. 6) along the neutral layer. 7) both of these 8) none of these
The observation of a "wet spot" on a hot highway in the summer is caused by
a. dispersion. b. diffraction. c. refraction. d. reflection.