The observable universe is the same size today as it was a few billion years ago
Indicate whether the statement is true or false
FALSE
Physics & Space Science
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Reactance: What is the reactance of a 20-mH inductor at a frequency of 60 Hz?
A. 7.5 ? B. 0.13 ? C. 1.2 ? D. 1.2 m? E. 7.5 m?
Physics & Space Science
A magnifying glass uses a convex lens with a refractive power of 20 diopters. What is the angular magnification if the image is to be viewed by a relaxed eye with a near point of 25 cm?
A) 5.0 B) 3.0 C) 4.0 D) 1.0 E) 2.0
Physics & Space Science
Total internal reflection occurs when the angle of incidence of the light is greater than the ______________ angle
Fill in the blank(s) with correct word
Physics & Space Science
The resistance of most metals generally decreases with temperature
Indicate whether the statement is true or false
Physics & Space Science