What is amplitude?
1.) amplitude is the number of complete waves that pass a point in a second.
2.) amplitude is the distance between two crests or two troughs.
3.) amplitude is the time it takes for one complete wave to pass a given point.
4.) amplitude is the height of a wave.

Aforce of 34n stretches a very light ideal spring 0.73 m from equilibrium, what is the force constant (spring constant) of the spring? (a) 47n/m (b) 38n/m (c) 53n/m (d) 25n/m

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.

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c