Scientists are investigating how well different microphones capture and record sounds. They use tools that show how loud the high and low sounds are and a tool that shows how much noise is recorded along with the actual sounds. Which is a scientific question that could be included in this investigation? Which microphone captures a singer's low sounds the loudest? Which microphone sounds best for a female singing rock music? Which microphone best records high sounds and low sounds? Which microphone is usually a male singer's favorite?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

The scalar triple product computes the magnitude m of the moment of a force vector f about a specified line. it is m = (r × f) · n, where r is the position vector from the line to the point of application of the force and n is a unit vector in the direction of the line. use matlab to compute the magnitude m for the case where f = [12, −5, 4] n, r = [−3, 5, 2] m, and n = [6, 5, −7].

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)