Agas pressure of 65,000.0 pa (gage pressure) is applied to one leg of a u-tube manometer, which contains a fluid of density of 1905.0 kg/m3. the other leg is open to atmosphere. what is the manometer reading? draw the u-tube manometer and label all relevant parameters. hint: you may assume that air density is much less than the fluid density

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