Interstellar matter is distributed very evenly throughout the galaxy
Indicate whether the statement is true or false
FALSE
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Ross 128 is 1.1 times further than Ross 154 . As such, the parallax angle of Ross 128 is 0.9 times larger than Ross 154
a. True b. False Indicate whether the statement is true or false
The type of EM radiation that has wavelength just a bit shorter than that of visible light is
a. ultraviolet. b. infrared. c. x-ray. d. microwave. e. gamma ray.
A piece of aluminum has density 2.70 g/cm3 and mass 770 g. The aluminum is submerged in a container of oil of density 0.650 g/cm3 . A spring balance is attached with string to the piece of aluminum. What reading will the balance register in grams (g) for the submerged metal?
a. 955 g b. 185 g c. 585 g d. 2 430 g e. 1 010 g
An object is placed on an optical bench. A lens with a focal length of 12 cm is placed 20 cm from the object. Where should a second lens, with a focal length of 4.0 cm, be placed if a total magnification +6 is to be obtained?
A) 20 cm from the first lens B) 35 cm from the first lens C) 40 cm from the first lens D) 30 cm from the first lens E) 25 cm from the first lens