Astraight line is drawn on the surface of a 13-cm-radius turntable from the center to the perimeter. a bug crawls along this line from the center outward as the turntable spins counterclockwise at a constant 45 rpm. its walking speed relative to the turntable is a steady 3.3 cm/s. let its initial heading be in the positive x-direction, where the x- and y-directions are fixed relative to the laboratory. as the bug reaches the edge of the turntable (still traveling at 3.3 cm/s radially, relative to the turntable) what are the x and y components of the velocity of the bug?

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.