1. Amy is riding on a train. She wants to sit at the front of the train for a better view, so she gets up to change her seat. Just as she starts walking toward the front of the train, it pulls into a station and stops.
a. Describe Newton’s First Law of Motion.
b. Describe what happens to Amy when the train stops.

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

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 field lines around one end of a bar magnet are shown below based on the diagram, what can you conclude about the pole of the magnet? a.is a south pole because the field hnes spread out from this end b.a north pole because the field lines spread out from this end c.a nouth pole because the field lines enter the magnet at this end d.is a north pole because the field lines enter the magnet at this end