physics paper 2 marks schemes
'a non contact form acts on each magnet' - Ans>>magnets aren't touching
but both experience a force
describe how to plot the magnetic field pattern of a bar magnet -
Ans>>place 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 -
Ans>>closing 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 = - Ans>>mass x acceleration
transverse wave - Ans>>the oscillation/ vibration is perpendicular to the
direction of energy transfer
why is it difficult to make predictions based on some hypothesises -
Ans>>they don't say how increasing or decreasing the force increases or
decrease the acceleration
list of equipment used in trolley ramp investigation - Ans>>newton metre
(force)
ticker timer + tape (change in velocity and time)
why use a sloping runway - Ans>>reduce effect of friction on trolley
why us the same trolley through the investigation - Ans>>so that the mass
is constant as changing the mass would change the acceleration
so there is only one independent variable
highest frequency electromagnetic - Ans>>gamma rays
what microwaves suitable for for sending comms to a satellite in space -
Ans>>can travel through the atmosphere
'a non contact form acts on each magnet' - Ans>>magnets aren't touching
but both experience a force
describe how to plot the magnetic field pattern of a bar magnet -
Ans>>place 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 -
Ans>>closing 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 = - Ans>>mass x acceleration
transverse wave - Ans>>the oscillation/ vibration is perpendicular to the
direction of energy transfer
why is it difficult to make predictions based on some hypothesises -
Ans>>they don't say how increasing or decreasing the force increases or
decrease the acceleration
list of equipment used in trolley ramp investigation - Ans>>newton metre
(force)
ticker timer + tape (change in velocity and time)
why use a sloping runway - Ans>>reduce effect of friction on trolley
why us the same trolley through the investigation - Ans>>so that the mass
is constant as changing the mass would change the acceleration
so there is only one independent variable
highest frequency electromagnetic - Ans>>gamma rays
what microwaves suitable for for sending comms to a satellite in space -
Ans>>can travel through the atmosphere
