A Level Edexcel Physics Paper 1,
Working as A Physicist, Core Practical’s
2 June 2024 Exam Questions and
Answers 100% Pass
Equation of motion for distance - Answer>>s = 1/2(v+u)t
s = ut + 1/2at^2
Equation of motion for velocity squared - Answer>>v^2 = u^2 +
2as
Equation for an magnetic field on a wire - Answer>>F = BIL
F = Force
B = Magnetic field strength (density)
I = Current
L = length
Equation for a magnetic field on a wire not at 90 degrees to the
field - Answer>>F = BILsin(angle)
F = Force
B = Magnetic field strength (density)
I = Current
L = length
Angle at 90 degrees should just use F = BIL as sin90 = 1
therefore cos component will not affect the force
Angle at 0 degrees will be 0 as sin0 = 0
Equation for a magnetic field on a moving charge - Answer>>F
= BQV
,F = Force
B = Magnetic field strength (density)
Q = charge
V = velocity
Equation for a magnetic field of a moving charge not at 90
degrees to the field - Answer>>F = BQVsin(angle)
F = Force
B = Magnetic field strength (density)
Q = charge
V = velocity
Angle at 90 degrees should just use F = BIL as sin90 = 1
therefore cos component will not affect the force
Angle at 0 degrees will be 0 as sin0 = 0
Fleming's Left Hand Rule - Answer>>First Finger Field
seCond finger Current
thuMb Motion
Relativistic Effects - Answer>>Only when objects approach the
speed of light do our observations begin to depart measurably
from the predictions of Newtonian Physics
Muon Decay and Relativistic Effects - Answer>>Muons are
created a few kilometers above the earth yet for the time they
should take to get here they would decay before they hit the
surface
But they do hit the surface, this is due to relativistic effects as
muons are going close to the speed of light
,The doppler Effect Model Answer - Answer>>As something that
is moving is giving out a wave its frequency can change as it is
being compressed by the moving object and therefore to a
relative observer the frequency appears higher
Cosmological Red Shift Model Answer - Answer>>As the
universe expands, galaxies are moving away from us the relative
observer. The light these galaxies give off it also redshifted so
that its wavelength increases
Total Internal Reflection Model Answer - Answer>>If the angle
of incidence is greater than the critical angle no light is refracted
out of the medium and all of the light is reflected back into the
medium. All light has been totally internally reflected
Critical Angle - Answer>>The largest angle as which refraction
out of a denser medium is possible
Critical Angle Equation - Answer>>n = 1/sinc
n = Refractive Index
c = critical angle
How to measure the refractive index of a material? -
Answer>>Measure the angle of incidence of a light ray in a
material and then the angle of refraction
use sin1/sinr = n to find the refractive index
How to predict whether total internal reflection will happen? -
Answer>>If the angle of incidence as it meets the surface is
, less than the critical angle, the ray will be refracted into the
medium, but some can get reflected, this is know as partial
internal reflection
Increasing this will go to total internal reflection.
How to add vector components? - Answer>>Use a protractor to
ensure correct angle
Place each vector head to tail
Join the first tail and final head together to get the resultant
Resolving vectors - Answer>>Place vectors together
For a right angle triangle sides can be calculated using
Pythagoras
Other triangles can be calculated suing cosine
Internal Resistance - Answer>>resistance inside the source of
electrical energy - loss of PD per unit current in the source when
current passes through it
Electromotive force - Answer>>The electrical potential energy
transferred from other forms, per coulomb of change that passes
through the source
Energy transfer EMF equation - Answer>>Work Done = Charge
x emf
Emf Equations - Answer>>E = V + IR
E = IR + Ir
E = I(R + r)
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