The coefficient of linear expansion of aluminum is 24 × 10-6 K-1 and the coefficient of volume expansion of olive oil is 0.68 × 10-3 K-1
A novice cook, in preparation of some pesto, fills a 1.00-L aluminum pot to the brim and heats the oil and the pot from an initial temperature of 15°C to 190°C. To his consternation some olive oil spills over the top. How much?
A) 0.11 L
B) 0.12 L
C) 0.13 L
D) 0.14 L
E) 0.15 L
A
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The focal length of a glass lens depends on
A. both the index of refraction of the glass and the intensity of the light passing through the lens. B. the curvature of the surface of the lens. C. the index of refraction of the glass. D. both the curvature of the surface of the lens and the index of refraction of the glass. E. the intensity of the light passing through the lens.
What is the equivalent capacitance of the combination shown?
A. 20 ?F B. 90 ?F C. 22 ?F D. 4.6 ?F E. 67 ?F
Potential Energy: A 7.0-?C point charge and a 9.0-?C point charge are initially extremely far apart. How much work does it take to bring the 7.0-?C point charge to the point x = 3.0 mm, y = 0.0 mm, and the 9.0-?C point charge to the point x = -3.0 mm, y = 0.0 mm? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 95 J B. 190 J C. 63 J D. 16 J
Which of the following explains why Polaris will no longer be the North Star 1,000 years from now?
A) Earth rotates once each day. B) Earth orbits the Sun once each year. C) The direction of Earth's axis in space precesses with a period of about 26,000 years. D) Stars appear to move randomly relative to our Sun in the local solar neighborhood. E) The universe is expanding.