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Get Full Access to Calculus: Early Transcendentals - 1 Edition - Chapter 7.7 - Problem 74e
Get Full Access to Calculus: Early Transcendentals - 1 Edition - Chapter 7.7 - Problem 74e

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# Adding a proton to a nucleus The nucleus of an atom is

ISBN: 9780321570567 2

## Solution for problem 74E Chapter 7.7

Calculus: Early Transcendentals | 1st Edition

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Problem 74E

Adding a proton to a nucleus The nucleus of an atom is positively charged because it consists of positively charged protons and uncharged neutrons. To bring a free proton toward a nucleus, a repulsive force F(r)=kqQ/r2 must be overcome, where q =1.6 × 10−19C is the charge on the proton, k = 9 × 109 N-m2/C2, Q is the charge on the nucleus, and r is the distance between the center of the nucleus and the proton. Find the work required to bring a free proton (assumed to be a point mass) from a large distance (r → ∞) to the edge of a nucleus that has a charge Q = 50q and a radius of 6 × 10−11 m.

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Chapter 3  Cell structure  Organelles smaller parts nuclei, mitochondria and chloroplasts  Cells are also the physical framework where metabolism occurs  Composed of more than one cell is multicellular organism  One cell is unicellular  The division of labor allows the entire organism to become more efficient  Negative consequences- as each cell becomes more specialized it depends more on others  Having thick walls makes other cells create photosynthesis mineral absorption and reproduction  Mother cell is the first cell and after it divides it produces two daughter cells grows into protoplasm  Membranes  Membranes perform many important tasks

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