Use a calculator to solve the problem, The time \( t \) (in seconds) that it takes for an object to fall a distance of s feet is given by the formula \[ t=\frac{\sqrt{5}}{4} \] In some places, the Grand Canyon is one mile ( 5,280 feet) deep. How long would it take a stone dropped over the edge of the canyon to hit bott (Round your answer to one decimal place.) sec

\( 8 \Rightarrow 12 \) Se tiene una tubería de \( \Phi=2.0 \mathrm{~m} \) en un punto a 320 m sobre el nivel del mar, el agua posee una velocidad de \( 12.0 \mathrm{~m} / \mathrm{s} \) y una presión de 45 m . El agua sale de la turbina con una velocidad de \( 1.8 \mathrm{~m} / \mathrm{s} \) y a presión atmosférica en un punto a 260 m sobre el nivel de mar. ¿Qué valor tiene la potencia que toma la turbina?

A slowly moving engine bumps into a string of coupled railroad cars standing on a siding. A wave pulse is transmitted down the string of cars as each one bumps into the next one. What type of wave is this? Multiple Choice a mix of transverse anditudinal

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

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}