A driver starts his parked car and within 4.6 seconds, reaches a velocity of 15 m/s. What is his acceleration?

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

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine