An impulse of 21 N*s is exerted on a 0.3 kg baseball traveling 72 m/s west. What is the velocity of the baseball after it has been hit? Report your answer to 1 decimal place.

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be

Give an example in which the electrical energy changes to light energy

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.