20. Se requiere una bomba para elevar 800 kg de agua por minuto desde el fondo de un pozo de 14 m , expulsándola con una rapidez de \( 18 \mathrm{~m} / \mathrm{s} \). La potencia desarrollada por la bomba corresponde a : a. \( 2,40 \times 10^{5} \) J b. \( 1,10 \times 10^{5} \) J c. \( 2,40 \times 10^{5} \mathrm{~W} \) d. \( 3,99 \times 10^{3} \mathrm{~W} \)

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

निकाल्नुहोस् । (If a bus covers 4.2 km of distance in 7 minutes, then calculate its average velocity.) Ans: \( 10 \mathrm{~m} / \mathrm{s} \)

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

What type of potential energy is due to the position of an object above the Earth's surfack?

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