Una masa pende de un resorte. El resorte está comprimido y mide 4 cm . Luego se suelta. Se observa que la masa regresa a la posición comprimida después de \( \frac{1}{3} \) de segundo. a) Encuentre una función que modele el desplazamiento de la masa. b) Grafique el desplazamiento de la masa.

If you increase the speed of a wave on a Slinky by increasing the tension, but keep the same frequency of back-and-forth motion, how does the wavelength change? Multiple Choice

Look at the electrical diagram. \begin{tabular}{l}\( V=8.6 \mathrm{~V} \) \\ \( I 1=0.3 \mathrm{~A} \) \\ \( I 2=0.5 \mathrm{~A} \) \\ \( I 3=0.2 \mathrm{~A} \) \\ Calculate the total resistance. \\ \hline 8.6 \\ \hline OK. \\ \( \begin{array}{l}V=10.6 \mathrm{~V} \\ I 1=0.9 \mathrm{~A} \\ I 2=0.3 \mathrm{~A} \\ I 3=0.3 \mathrm{~A}\end{array} \) \\ Calculate the total resistance. \\ \hline\end{tabular}

A wave can be propagated on a blanket by holding adjacent comers in your hands and moving the end of the blanket up and down. What type of wave is this? Multiple Choice longitudinal

At sporting events the crowd sometimes generates a "wave" that propagates around the stadium. What type of wave is this?

\begin{tabular}{l} Look at the electrical diagram. \\ \( I_{R 1}=0.7 \mathrm{~A} \) \\ \( R 1=3.8 \Omega \) \\ Calculate the source voltage. \\ \hline 2.66 \\ \hline OK. \\ \begin{tabular}{l}\( I_{R 1}=0.8 \mathrm{~A} \) \\ \( R 1=4.7 \Omega \) \\ Calculate the source voltage. \\ \hline\end{tabular} \\ \hline\end{tabular}