If the atmosphere’s “optical thickness” n depended on the ratio of the concentrations to the first power instead of to the 1/2 power in equation T10.8a, would this accelerate or brake the warming compared to the model in the text?
A. Accelerate
B. Brake
C. No change
A. Accelerate
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A nonprismatic cantilever beam of one material is subjected to load P at its free end. Moment of inertia I2 5 2I1. The ratio r of the deflection ?B to the deflection ?1 at the free end of a prismatic cantilever with moment of inertia I1 carrying the same load is approximately:
(A) 0.25
(B) 0.40
(C) 0.56
(D) 0.78
All the following may be represented by vectors except
a. velocity. b. acceleration. c. speed. d. displacement.
Refracting Telescope: A refracting telescope has an eyepiece of focal length -80 mm and an objective of focal length 36 cm. What is the magnification of this instrument?
Fill in the blank(s) with the appropriate word(s).
Radioactive Decay: A test tube of an isotope having a decay constant of 0.765 × 10-6 s-1 contains 3.0 × 1017 nuclei of this isotope.(a) What is the half-life of this isotope?(b) What is the initial activity (in Bq) of the isotope?(c) What is the activity of the isotope after 12 days?
What will be an ideal response?