Question
Ok, let's use the following information to very roughly estimate the size of the nucleus. Rutherford, Geiger, and Marsden (his students) fired a beam of alpha particles at a gold foil. The alpha particles had an energy of about 3.70 million electron volts, a charge of +2e, and a mass of about four AMU (one Atomic Mass Unit is 1.66 x 10-27 kg. Gold has atomic number 79.
How close could the alpha particles get to the gold nucleus?
How close could the alpha particles get to the gold nucleus?
Answers
change ev to joules.
work to get close= KE= integral force*dx
the integral is from inf to d, you are looking for d.
KEinJoules= INT kQq/x^2 dx= -kQq/x
and over the limit,
ke in joules= kQq/d solve for d.
work to get close= KE= integral force*dx
the integral is from inf to d, you are looking for d.
KEinJoules= INT kQq/x^2 dx= -kQq/x
and over the limit,
ke in joules= kQq/d solve for d.
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