Question
Given the waveform in Figure 24.5(d), if $T = 3.0 \times 10^{-9} \textrm{ s}$ and $E = 5.0 \times 10^5 \textrm{ N/C}$, which of the following is the correct equation for the wave at the antenna?
1. $\left( 5.0 \times 10^5 \textrm{ N/C} \right) \sin\left( 2\pi(3.0 \times 10^{-9} \textrm{ s})t \right)$
2. $\left( 5.0 \times 10^5 \textrm{ N/C} \right) \sin \left( \dfrac{2\pi t}{3.0 \times 10^{-9} \textrm{ s}} \right)$
3. $\left( 5.0 \times 10^5 \textrm{ N/C} \right) \cos\left( 2\pi(3.0 \times 10^{-9} \textrm{ s})t \right)$
4. $\left( 5.0 \times 10^5 \textrm{ N/C} \right) \cos \left( \dfrac{2\pi t}{3.0 \times 10^{-9} \textrm{ s}} \right)$

(d)

Solution Video