Suppose the velocity of an electron in an atom is known to an accuracy of 2.0×103m/s (reasonably accurate compared with orbital velocities). what is the electron’s minimum uncertainty in position, and how does this compare with the approximate 0.1-nm size of the atom?

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.

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)