Light from distant stars that must pass through dust arrives bluer than when it left its star
Indicate whether the statement is true or false
FALSE
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Quasar redshifts are usually larger than the redshifts of the visible galaxies
a. True b. False Indicate whether the statement is true or false
What causes synchronous rotation?
A) Most jovian moons were formed out of their planet's nebula with the same rotational period as their parent planet. B) Most jovian moons were formed out of their planet's nebula with the same orbital period. C) A massive planet exerts a tidal force on a moon that causes the moon to obtain the same rotational period as its parent planet. D) A massive planet exerts a tidal force on a moon that causes the moon to align itself such that its tidal bulges always point toward and away from the planet. E) orbital resonances with other moons
Most comets spend the majority of their time beyond the orbit of ________, yet many of them have perihelions very close to the Sun
Fill in the blank(s) with correct word
Lens-Maker Formula: The radius of curvature of the curved side of a plano-convex lens made of glass, having index of refraction 1.64, is 33 cm. What is the focal length of the lens?
A. 52 cm B. -52 cm C. 21 cm D. -21 cm