Acertain harmonic sound wave is traveling in a medium of density 1.3e3 kg m3. the molecules make one complete oscillation in 5.7e-3 s. consecutive points of maximum pressure are separated by a distance of 7.8 m. if the maximum displacement of the moleculès is 8.2e-0 pa calculate the the maximum pressure of the molecules. (1 point) a 25.356 pa b. 23.287 pa c16.08 pa d 28.776 pa e s.131 pa

A50.0-n box is sliding on a rough horizontal floor, and the only horizontal force acting on it is friction. you observe that at one instant the box is sliding to the right at and that it stops in 2.25 s with uniform acceleration. what magnitude force does friction exert on this box

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.