What is the maximum number of eclipses that can occur in a year?
A. 7 (four solar and three lunar)
B. 4 (two solar and two lunar)
C. 2 (one solar and one lunar)
D. 7 (five solar and two lunar) or 7 (four solar and three lunar)
E. 7 (five solar and two lunar)
Answer: D
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Nuclear power reactors cause less atmospheric pollution that fossil fuel power plants and produce no greenhouse gasses
A. true B. false
A double slit illuminated with light of wavelength 588 nm forms a diffraction pattern on a screen 11.0 cm away. The slit separation is 2464 nm. What is the distance between the third and fourth bright fringes away from the central fringe?
A) 23.9 cm B) 5.96 cm C) 5.59 cm D) 2.63 cm
If the absolute value of the magnification is smaller than one, then the image is
A) larger than the object. B) the same size as the object. C) smaller than the object.
Water at room temperature, 20°C, is pumped into a reactor core where it is converted to steam at 200°C. How much heat (in J) is transferred to each kilogram of water in this process? (csteam = 2 010 J/kg?°C; LV,steam = 2.26 × 103 J/g; 1 cal = 4.186 J.)
A. 3.35 × 105 B. 7.53 × 105 C. 2.67 × 106 D. 2.80 × 106 E. 3.01 × 106