Predict how the force between the sheets would be different if this experiment were done with twice as much charge on each of the plates. Justify your prediction.

The gravitational attraction between two objects will if one object acquires more mass .

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Who was the first scientist to measure speed as distance over time?