Hakan put three different samples of water in dishes and left them in a room at 20°C. There was the same amount of water in each dish.

After two days there was no water in the dishes.
There was some white solid left in each dish.
a. Explain why there was no water in any of the dishes after two days.

b. There was more white solid in dish A than in dish B or dish C.
Explain why there was more white solid in dish A.

c. Hakan then poured water into dish A and stirred it.
What happened to the white solid?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].