Gina designed a model to show the steps in the Nebular theory of formation of
planetary systems. Which of these diagrams best represents the third step of Ginas model? 1) condensation and contraction of cloud due to gravity 2) rotation of cloud and dust 3) formation of planet 4) fusion of gas and dust at the center to form the sun

Why does the input force have to be greater than the force needed to lift the bale?

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)