Angle of friction.

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

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

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?