Answer:
i know the questin but i got to try and find it
Explanation:
Answer:
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By Snell's law:
η = sini / sinr. i = 25, η = 1.33
1.33 = sin25° / sinr
sinr = sin25° / 1.33 = 0.4226/1.33 = 0.3177 Use a calculator.
r = sin⁻¹(0.3177)
r ≈ 18.52°
Option A.
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Alpha particles, because they are the heaviest ones (helium nuclei) and will travel around the body.
Sure what do u need help with