The symbol for the element whose atoms contain 28 protons is ______________
Fill in the blank(s) with correct word
Ni
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Two charged bodies separated by a distance d exert an attractive electrical force on each other. The signs of the charges on the two bodies are __________ and __________
Fill in the blank(s) with correct word
A capacitor consists of two large parallel plates of area A separated by a very small distance d. This capacitor is connected to a battery and charged until its plates carry charges +Q and -Q, and then disconnected from the battery
If the separation between the plates is now doubled, the potential difference between the plates will A) double. B) quadruple. C) be cut in half. D) be cut in fourth. E) not change.
The acceleration due to gravity at the surface of Planet X is 10 m/s2 . What is the acceleration due to gravity at an altitude of 3 000 km above the surface of this planet?
a. 10 m/s2 b. 8.0 m/s2 c. 4.4 m/s2 d. More information is needed.
A watt is one ______________ per second
Fill in the blank(s) with correct word