Aneutron in a reactor makes an elastic head-
on collision with the nucleus of an atom ini-
tially at rest.
assume: the mass of the atomic nucleus is
about 12.8 the mass of the neutron.
what fraction of the neutron's kinetic en-
ergy is transferred to the atomic nucleus?

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

The plum pudding model of the atom states that ?

If it takes a planet 2.8 x 10^8 s to orbit a star with a mass of 6.2 x 10^30 kg what is the average distance between the planet and the star