Recent content by xbeachbabeee

Homework Statement List the possible echelon forms for a 4 x 3 matrix A such that the columns of A are linearly dependent.

yeah i was just a little confused as to what "Assume that both Tom and Sally can be replaced by spherical masses" means..

F = G(MaMb/d^2)

Homework Statement Tom has a mass of 70.0 kg and Sally has a mass of 50.0 kg. Tom and Sally are standing 20.0 m apart on the dance floor. Sally looks up and sees Tom. She feels an attraction. If the attraction is gravitational, find its size. Assume that both Tom and Sally can be replaced by...

Homework Statement Assume that you have a mass of 50.0 kg and Earth has a mass of 5.97 x 10^24 kg. The radius of Earth is 6.38 x 10^6 m. a) what is the force of gravitational attraction between you and Earth? b) What is your weight? please show your work..im so confused! thanks!