1 . 0.0015×10m0.03×10k=5×107

• A. 9
• B. 8
• C. 7
• D. 6
• D. 5

Answer: Option A

Explanation:

2 . m0

• A. $m_0 \left[1-\frac{v^2}{c^2}\right]$
• B. $\frac{m_0}{\left[1-c^2\right]}$
• C. $m_0{c}^2$
• D. $\frac{m_0}{\sqrt{1-{\displaystyle \frac{v^2}{c^2}}}}$

Answer: Option D

Explanation: