If one holds one end of the clothesline taut and wiggles it up and down sinusoidally with frequency 2.00 Hz, the amplitude is 0.075 m. The wave speed on the clothesline is 12 m/s. At , we have maximum positive displacement at position and the velocity is zero. Assume that no wave bounces back from the far end. (a) Find the wave amplitude , angular frequency , period , wavelength and wave number . (b) Find a wave function describing the wave. (c) Find equations for the displacement, as a function of time, of the particle at and of a point at 3.00 m.

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?

Answer on edg: what happens to the light coming from the sun? - scattering what happens to light on the surface of water? - specular reflection what happens to light on the surfaces of rocks? - diffuse reflection

How many milliliters of water at 23 °c with a density of 1.00 g/ml must be mixed with 180 ml (about 6 oz) of coffee at 95 °c so that the resulting combination will have a temperature of 60 °c? assume that coffee and water have the same density and the same specific heat. how much will the temperature of a cup (180 g) of coffee at 95 °c be reduced when a 45 g silver spoon (specific heat 0.24 j/g °c) at 25 °c is placed in the coffee and the two are allowed to reach the same temperature? assume that the coffee has the same density and specific heat as water. a 45-g aluminum spoon (specific heat 0.88 j/g °c) at 24 °c is placed in 180 ml (180 g) of coffee at 85 °c and the temperature of the two become equal. (a) what is the final temperature when the two become equal? assume that coffee has the same specific heat as water. (b) the first time a student solved this problem she got an answer of 88 °c. explain why this is clearly an incorrect answer.