The diagram below illustrates the layout and light path of a reflecting telescope of the ____________________ design
Fill in the blank(s) with correct word
Cassegrain
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What is a new moon?
a. The lunar phase in which the first quarter Moon approaches full moon b. The lunar phase in which Earth's shadow is cast on the Moon c. The lunar phase in which the Moon's shadow is cast on Earth d. The lunar phase in which sunlight illuminates only the far side of the Moon e. The lunar phase in which sunlight illuminates the Earth facing side of the Moon
The angular momentum of a rotating body is conserved when
A. when the body has a constant angular acceleration. B. the shape of the body does not change. C. no net force acts on the body. D. no net torque acts on the body.
Which of these would be represented by a vector?
a. fifteen feet north b. speed c. volume d. time e. distance
On a prescription for eyeglass lenses, what does the quantity expressed in diopters refer to?
a. The thickness of eyeglass lenses. b. The limitations of the person's eyes. c. The width of the eyeglass lens. d. The strength of eyeglass lenses. e. The curvature of eyeglass lenses.