If two wires run parallel and the current passes through both wires in the same direction, which happens to the wires?

Why do electron microscopes have higher resolving power than light microscopes?

What pressure difference is required between the ends of a 2.0-m-long, 1.0-mm-diameter horizontal tube for 40 c water to flow through it at an average speed of 4.0 m/s?

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity