Which industry was an oligopoly in the united states?
a.
agriculture industry
c.
steel industry
b.
shipping industry
d.
coal industry

Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?

Where do magnetic lines of force enter earth?

Two balls, each with a mass of 0.5 kg, collide on a pool table. is the law of conservation of momentum satisfied in the collision? explain why or why not