-two charges with magnitude Q experience a Force F when placed at a distance of

Question

-two charges with magnitude Q experience a Force F when placed at a distance of r. What is the force between that two charges when distance between those is 2r. A) f/4 B)F/2 C) 9F D)4F E)16F. -A parallel plate capacitor consists of two strips of aluminum foil, each with an area of 1.0m^2 seperated by a distance of 1mm. The space between the foils is empty. What is the capacitance? A) 10000 B) 10 C) 1000 D) 0.1 E)0.01 -two charges with magnitude Q experience a Force F when placed at a distance of r. What is the force between that two charges when distance between those is 2r. A) f/4 B)F/2 C) 9F D)4F E)16F. -A parallel plate capacitor consists of two strips of aluminum foil, each with an area of 1.0m^2 seperated by a distance of 1mm. The space between the foils is empty. What is the capacitance? A) 10000 B) 10 C) 1000 D) 0.1 E)0.01 -two charges with magnitude Q experience a Force F when placed at a distance of r. What is the force between that two charges when distance between those is 2r. A) f/4 B)F/2 C) 9F D)4F E)16F. -A parallel plate capacitor consists of two strips of aluminum foil, each with an area of 1.0m^2 seperated by a distance of 1mm. The space between the foils is empty. What is the capacitance? A) 10000 B) 10 C) 1000 D) 0.1 E)0.01

Explanation / Answer

there are multiple questions i have solved question 1 )

Question 1 ) F = K * Q / ( r) ^2

F = K * Q / ( 2r ) ^ 2

so now we divide both equations we get

F/F= 4

SO F=4F ( part d is the answer ) ------------------------->>>>>>>>>>><<<<<<<<<< answer )

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