WPH0 QR Dynamic Papers Physics al Edexcel

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Edexcel | Physics WPH0 | W 16 4 1 | 1 hour 30 minutes

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evidence for the nuclear model of the atom. Alpha particles were fired at a thin gold foil

and their paths observed.

11

(a)

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3 Mark s

Describe the observations from the alpha particle scattering experiment.

Most alpha particles passed straight through (the gold foil)

Or most alpha particles were undeflected

Some/few alpha particles were deflected/deviated/scattered (through

small angles, indication of <90o)

Very few were deflected through an angle greater that 90o

Or <1% came straight back

Or 1 in 8000 came straight back

11

(b)

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3 Mark s

from the gold nucleus. Calculate the force between the alpha particle and the gold

nucleus.

Force =

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