In a neutron star, the protons and electrons are fused together, leaving only neutrons
Indicate whether the statement is true or false
TRUE
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Silica definition
What will be an ideal response?
If the distance between two charged objects and the charge on each of them are all doubled, the electric force by either one on the other is
A) reduced to one-quarter of the original force. B) doubled. C) quadrupled. D) halved. E) unchanged.
A lawn mower has a 6-horsepower engine (1 HP = 750 W). If the engine has an efficiency of 20%, and the throttle is such that the engine cycles 10 times a second, the heat that is expelled in one cycle is
a. 1 800 J b. 2 000 J c. 2 200 J d. 2 400 J e. 2 250 J
Due to the temperature and atmospheric conditions of Titan, scientists hypothesize that Titan may have rivers, lakes and possibly an ocean of ____
a. liquid water b. metallic hydrogen c. frozen carbon dioxide d. liquid methane e. liquid nitrogen