Physics (AS & A Level) · Oct / Nov 2021 · Paper 23 · Question 4
9702
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An α-particle moves in a straight line through a vacuum with a constant speed of 4.1 × 106 m s–1. The α-particle enters a uniform electric field at point A, as shown in Fig. 4.1. α-particle, speed 4.1 × 106 m s–1 A B uniform electric field Fig. 4.1 The α-particle continues to move in the same straight line until it is brought to rest at point B by the electric field. The deceleration of the α-particle by the electric field is 2.7 × 1014 m s–2.
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4(a)[1]
4(b)[2]
4(c)[3]
4(d)[1]
4(e)[1]
4(f)(i)[3]
4(f)(ii)[3]
4(f)(iii)[1]
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