A fastpitch softball player can pitch the ball horizontally at 28.6 m/s (64 mph). If the distance from the pitcher's mound to home plate is 14 meters, how much time does it take the softball to get there? (5 points)

The specific heat of silver is 0.057 calories/gram°c. if 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°c, how many calories of heat energy were absorbed by the sample?

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Rank the six combinations of electric charges on the basis of the electric force acting on q1. define forces pointing to the right as positive and forces pointing to the left as negative. rank positive forces as larger than negative forces. q1,q2,q3 = positive(+) q1 = + q2 = + q3 = - q1 = + q2= - q3= + q1= - q2= + q3= + q1= + q2= - q3= - q1,q2,q3 = negative