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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The resistance of most metals generally decreases with temperature

Indicate whether the statement is true or false

Physics & Space Science

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