2. Electrostatic painting works because (a) the paint and the object to be painted have opposite charges (b) the paint is difficult to charge, while the object to be painted is not (c) the paint is easily charged, while the object to be painted is not (d) none of the above (11.1)

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?

\( 8 \Rightarrow 12 \) 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?

\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}

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