Two spherical objects have masses of 7.5 x 105 kg and 9.2 x 107 kg. Their centers are separated by a distance of 2.5 x 103 m. Find the gravitational attraction between them.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

pecialized keyboards

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.