Task 60415.
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- Physics
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- 60415.PNG (67.28 KB)
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- 09.05.2016 20:30:39
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- Юрий Физик · about the seller and their products
DESCRIPTION
Task 60415.
A narrow beam of protons with kinetic energy of 100 keV padant normally on gold foil, which pd = 1.0 mg / cm ^ 2 (p - density, d - thickness). The protons scattered at an angle of 60 °, counter registers, input round hole which has an area of 1.0 cm ^ 2, and it is separated from the scattering foil section at a distance of 10 cm. The hole is oriented perpendicular to counter falling on him protons. What proportion of the scattered protons enters the opening of the counter?
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Detailed recording solution formulas and the laws used in the decision, the withdrawal of the formula.
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