6. The radius of a ball is (5.2 + 0.2) cm. The percentage
error in the volume of the ball is;

An electron and a proton are held on an x axis, with the electron at x = + 1.000 m and the proton at x = - 1.000 m. part a how much work is required to bring an additional electron from infinity to the origin? express your answer with the appropriate units. part b if, instead of the second electron coming in from infinity, it is initially at x = + 20.00 m on the axis and is given an initial velocity of 100.0 m/s toward the origin, does it reach the origin? part c how close to the origin does it come?

Look at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way

Is the ability of one substance to dissolve in another.