waec model questions vol1 2024 physics
Objective • Question 5
Question 5
WAEC_MODEL_QUESTIONS_VOL1
•
2024
An alpha particle is emitted from a radioactive source with an energy of 5 MeV. Convert this energy into joules and calculate the speed of the alpha particle, given that its mass is approximately 4.0 x 10^-27 kg.
Answer Options
A.
4.0 x 10^7 m/s.
B.
1.5 x 10^7 m/s.
C.
3.0 x 10^7 m/s.
Correct Answer
D.
2.0 x 10^7 m/s.
Correct Answer
D
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