l.0-g bags of protons, one at the earth?s north pole and the other at t the sout
ID: 1374811 • Letter: L
Question
l.0-g bags of protons, one at the earth?s north pole and the other at t the south pole. (a) How many protons are in each bag? (b) Calculate the gravitational attraction and the electrical repulsion that ; each bag exerts on the other. (e) Are the forces in part (b) large enough for you to feel if you were holding one of the bags? 21.80 . Electric Force Within the Nucleus. Typical dimensions of atomic nuclei are of the order of 10^-15 m (1 fm). (a) 1f two protons in a nucleus are 2.0 fm apart, find the magnitude of the electric force each one exerts on the other. Express the answer in newtons and in pounds. Would this force be large enough for a person to feel'? (b) Since the protons repel each other so strongly, why don?t they shoot out of the nucleus? 21.81 .. If Atoms Were Not Neutral. . . Because the charges on the electron and proton have the same absolute value, atoms are electrically neutral. Suppose this were not precisely true, and the absolute value of the charge of the electron were less than the charge of the proton by 0.00100%. (a) Estimate what the net charge of this textbook would be under these circumstances. MakeExplanation / Answer
nmp = 1g
n = 1g / 1.602(10-24)g
n = 6.2* 1023
b) Fg = (1.67)(1.602)2(10-27)2 / 22(6400000)2
= 1.2 * 10-68 N
Fe = (9)(109)(6.2)(1023)(1.6)2(10-19)2 / 4(6400000)2
= 8.7* 1019N
No, the gravitational force acting on 1g is not so enough.
Electric force
FG = Kq2 / 22(10-15)2
=9(109)(1.67)2(10-27)2 / 4(10-30)
= 6.2 * 10-15N
b) the strong nuclear forces between proton is greater than the electrostatic force between two electron.
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