If an object is accelerating at 4 m/s^2 and has a mass of 8 kg, what is the net force (in newtons, N) on the object?

When solid surfaces slide over each other the kind of friction that occurs is called friction

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

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