physics paper 2 marks schemes Correct 100%

'a non contact form acts on each magnet' - ANSWERmagnets aren't touching but both experience a force describe how to plot the magnetic field pattern of a bar magnet - ANSWERplace a compass near the north pole of the magnet and mark the direction that the compass points move the compass around the bar magnet to the other pole, marking at intervals the direction the compass points join the points up and add an arrow pointing from the north poe to the south pole explain the effect on the motion of a ball bearing when the switch is closed - ANSWERclosing the switch causes a current in the coil a magnetic field is created a force of attraction acts on the ball bearing so the ball bearing accelerates towards the iron nail force = - ANSWERmass x acceleration transverse wave - ANSWERthe oscillation/ vibration is perpendicular to the direction of energy transfer why is it difficult to make predictions based on some hypothesises - ANSWERthey don't say how increasing or decreasing the force increases or decrease the acceleration list of equipment used in trolley ramp investigation - ANSWERnewton metre (force) ticker timer + tape (change in velocity and time) why use a sloping runway - ANSWERreduce effect of friction on trolley why us the sa