Friction is a (1) that (2)
motion. It acts in a direction (3)
to the motion of
the object. There is (4)
exerted on an object that
moves on a (5)
than on a (6)
Friction opposes the motion of an object as it moves across a
surface. An object slows down (7)
on a rough
surface than on a smooth surface.​

Match these items. 1. coulombs __force 2. ohms __emf 3. centimeters __resistance 4. newtons __charge 5. volts __length

What are known as the properties of substances that describe a substance et does not change that substances?

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