Asquare is cut out of a copper sheet. two straight scratches on the surface of the square intersect forming an angle theta. the square is heated uniformly. as a result, the angle between the scratches? a) increasesb) decreasesc) stays the samed) depends on whether theta is obtuse or acute

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc

Use vsepr theory to predict the molecular geometry of the molecule hcn.

The molecular mass of a gas is (select all that apply) a. independent of the type of gas b. the same number as the atomic (or molecular) mass, but measured in grams c. dependent on the temperature d. the mass of a mole of the gas