The Appalachian Mountains in the eastern United States are examples of ______________ mountains
Fill in the blank(s) with correct word
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A scientific model is considered valid if it is consistent with
A) a single observation by an individual scientist B) the opinions of experts in the field C) repeated observations made by an individual scientist D) independent observations made by different scientists
For experiments involving the setup shown in figure Q4.1b, which of the following possible results (if seen) regarding the final value displayed by the voltmeter would probably not be consistent with the wave model of light? 
A. It increases as the light’s intensity increases. B. It is independent of the light’s intensity. C. It varies as the light’s wavelength changes. D. It increases as the rate of electron ejection increases.
Two parallel wires are separated by 0.25 m. Wire A carries 4.1 A and Wire B carries 10 A, both currents in the same direction. The magnetic permeability in empty space µ0 = 4p × 10^-7 T×m/A. The magnitude of the force on 1.4 m of Wire A is:
a. 2.6 × 10^–5 N. c. less than 1.0 × 10^–5 N. b. 4.6 × 10^–5 N. d. 3.2 × 10^–5 N.
How many moles of He would 3.01 × 10^23 helium atoms be?
a. 2.00 b. 4.00 c. 0.50 d. 1.00 e. None of these