1. Diagram 1 shows a wire hung between the poles of a permanent magnet A and B. The wire moves
to the right when the switch is turned on.
(a) (i) State the polarity of the permanent magnet in Diagram 1.
(ii) Name the rule used to determine the polarity of the permanent magnet.
(b) State two ways to reverse the direction of motion of the wire in Diagram 1.
[4 marks]
Diagram 2 shows a bar magnet being pushed into a solenoid and being pulled out from a solenoid.
Out
2.

not moving. pos accel,

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle