A supercluster is a cluster of supergiants
Indicate whether the statement is true or false
False
Physics & Space Science
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A roofer lifts supplies a height of 20. m with a hand-operated winch. How long would it take him to lift a 200. kg load, if the winch has an efficiency of 90%, and the rate at which the winch can do work is 0.80 hp?
What will be an ideal response?
Physics & Space Science
What would the Venus "no greenhouse" temperature be if its clouds were more transparent, giving a reflectivity the same as Earth's?
Physics & Space Science
The circuit below contains three 100-W light bulbs and a capacitor. The emf is 110 V and the capacitor is fully charged. Which light bulb(s) is(are) brightest?
A. A B. B C. C D. A and B E. A and C
Physics & Space Science
When liquid water freezes, it
A) loses energy. B) gives off energy. C) gains energy. D) radiates energy.
Physics & Space Science