1.5.2.
Solution.
\(5 ft\cdot\frac{12 in}{1 ft}+9 in = 60 in+9in = 69 in= 175.26 cm\text{.}\)
Appendix B Selected Solutions
1 Scientific Method
1.5 Exercise
1.5.4.
Solution.
empty
1.5.5.
Solution.
empty
1.5.10.
2 Motion
2.4 Exercise
2.4.11.
Solution.
Answer: b. They will have the same acceleration when reach the ground.
6 Waves
6.4 Exercises
6.4.13.
Solution.
Given: \(f=90MHz= 90\times 10^6 Hz\text{,}\) \(v= 3\times 10^8 m/s,\text{,}\) \(\Lambda=?\)
\begin{align*}
v \amp =f\lambda \\
\lambda \amp =\frac{v}{f} \\
\lambda \amp =\frac{3\times 10^8}{90\times 10^6} \\
\therefore \lambda \amp =3.33 m
\end{align*}
