Radioactive particles moving at $0.80 \mathrm{c}$ are measured to have a half-life of $4.3 \times 10^{-8} \mathrm{~s}$. What is their half-life when at rest?
A) $1.7 \times 10^{-7} \mathrm{~s}$
B) $7.2 \times 10^{-8} \mathrm{~s}$
C) $3.4 \times 10^{-8} \mathrm{~s}$
D) $2.6 \times 10-8 \mathrm{~s}$
E) $1.6 \times 10^{-8} \mathrm{~s}$

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The Answer of Radioactive particles moving at $0.80 \mathrm{c}$ are measured to have a half-life of $4.3 \times 10^{-8} \mathrm{~s}$. What is their half-life when at rest?
A) $1.7 \times 10^{-7} \mathrm{~s}$
B) $7.2 \times 10^{-8} \mathrm{~s}$
C) $3.4 \times 10^{-8} \mathrm{~s}$
D) $2.6 \times 10-8 \mathrm{~s}$
E) $1.6 \times 10^{-8} \mathrm{~s}$

Radioactive Particles Moving At 0.80c0.80 \mathrm{c}0.80c Are Measured to Have a Half-Life Of

Radioactive Particles Moving At $0.80 \mathrm{c}$ Are Measured to Have a Half-Life Of