Most of the modern large optical telescopes are refractors.
Answer the following statement true (T) or false (F)
False
Physics & Space Science
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A solid object is made of two materials, one material having density of 2 500 kg/m3 and the other having density of 6 500 kg/m3 . If the object contains equal masses of the materials, what is its average density?
a. 3 611 kg/m3 b. 4 500 kg/m3 c. 4 611 kg/m3 d. 9 000 kg/m3 e. more information is needed
Physics & Space Science
In a hydrogen atom, a given electron has n = 7. How many values can ? have?
A) 6 B) 7 C) 15 D) 33 E) 98
Physics & Space Science
The force that keeps your feet from sliding as you walk is
a. centripetal force b. weight c. kinetic friction d. static friction e. none of the above
Physics & Space Science
The slope of a velocity vs. time graph is the __________
Fill in the blank(s) with correct word
Physics & Space Science