Melanie watched the path a baseball followed after a pitcher threw it. she noticed that the ball traveled horizontally away from the pitcher as well as downward toward the ground. what force caused the ball to accelerate in the downward direction when it was thrown applied force

electrical force

gravitational force

What makes thermal imaging cameras useful? they can detect differences in color. they can detect differences in wave speeds. they can detect differences in temperature. they can detect mechanical waves.

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.

How do you count the total number of atoms present on one side of a chemical equation?