Ahigh school student ran the 100 meter dash in 12.20 seconds. find the velocity in meters per second and kilometers per hour.

How can you increase the strength of an electromagnet?

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?

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.