(a) assuming an atomic nucleus is spherical in shape, show that its radius r is proportional to the cube root of the mass number (a). (b) in general, the radius of a nucleus is given by r roa1/3, where ro is a proportionality constant given by 1.2 x 10^-15 m. calculate the volume of the li nucleus. (c) given that the radius of 7li3 atom is 152 pm, calculate what fraction of the atom's volume is occupied by its nucleus. does your result support rutherford's model of the atom?

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.