Abinary star system consists of two stars of masses m1 and m2. the stars, which gravitationally attract each other, revolve around the center of mass of the system. the star with mass m1 has a centripetal acceleration of magnitude a1. note that you do not need to understand universal gravitation to solve this problem. find a2, the magnitude of the centripetal acceleration of the star with mass m2.

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Drag each item into the proper state of matter category.

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.