In the diagram below label each of the major divisions of Earth's interior
A: Crust, B: Mantle, C: Liquid Core, D: Solid Core
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The H-R diagram can plot
A) apparent magnitude versus spectral classes. B) radius versus luminosity. C) radius versus mass. D) temperature versus luminosity. E) temperature versus mass.
An ideal, isolated, air-filled parallel-plate capacitor is not connected to a battery but has equal and opposite charges of 3.9 nC on its plates
The separation between the plates initially is 1.2 mm, and for this separation the capacitance is 3.1 × 10-11 F. How much work must be done to pull the plates apart until their separation becomes 7.7 mm? (?0 = 8.85 × 10-12 C2/N ? m2 )
Tritium (3H) has a half-life of 12.3 years and releases 0.0186 MeV energy per decay. What is the activity of a 9.0-gram sample of tritium? (NA = 6.02 × 10^23 mol–1, 1 year = 3.16 × 10^7 s, 1 MeV = 1.6 × 10^–13 J, and mt = 3.01605 u)
a. 1.3 × 10^16 Bq c. 3.6 × 10^14 Bq b. 1.1 × 10^15 Bq d. 3.2 × 10^15 Bq
How does friction affect energy transformations?