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Relationships to Recall and Apply — OCR GCSE Combined Science B J260
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Combined Science
OCR GCSE Combined Science B
Mathematical Skills and Equations
Equations in Physics
Relationships to Recall and Apply
OCR GCSE Combined Science B · J260
Relationships to Recall and Apply
What you need to know
Calculate wave speed using frequency and wavelength:
v
=
f
λ
v = f \lambda
v
=
f
λ
Calculate energy transferred using power and time:
E
=
P
t
E = P t
E
=
Revision notes
1
Relationships to Recall and Apply
17 key terms
Practise with past papers
Key terms & definitions
Previous topic: Mathematical Skills
Geometry and Trigonometry
Next subtopic
Relationships to Select and Apply
P
t
Calculate efficiency from useful energy transferred and total energy transferred.
Calculate charge using electrical current and time:
Q
=
I
t
Q = I t
Q
=
I
t
Calculate potential difference using current and resistance:
V
=
I
R
V = I R
V
=
I
R
Calculate potential difference using work done and charge:
V
=
W
Q
V = \frac{W}{Q}
V
=
Q
W
Calculate electrical power using energy transferred and time:
P
=
E
t
P = \frac{E}{t}
P
=
t
E
Calculate energy transferred (work done) using charge and potential difference:
E
=
Q
V
E = Q V
E
=
Q
V
Calculate electrical power using potential difference and current:
P
=
V
I
P = V I
P
=
V
I
Calculate electrical power using current and resistance:
P
=
I
2
R
P = I^2 R
P
=
I
2
R
Calculate weight using mass and gravitational field strength:
W
=
m
g
W = m g
W
=
m
g
Calculate average speed using distance and time:
v
=
s
t
v = \frac{s}{t}
v
=
t
s
Calculate acceleration using change in speed and time taken:
a
=
v
−
u
t
a = \frac{v - u}{t}
a
=
t
v
−
u
Calculate momentum using mass and velocity:
p
=
m
v
p = m v
p
=
m
v
Calculate force using mass and acceleration:
F
=
m
a
F = m a
F
=
ma
Calculate work done using force and distance:
W
=
F
s
W = F s
W
=
F
s
Calculate kinetic energy using mass and speed:
E
=
0.5
m
v
2
E = 0.5 m v^2
E
=
0.5
m
v
2
Calculate gravitational potential energy using mass, gravitational field strength, and height:
E
=
m
g
h
E = m g h
E
=
m
g
h
Calculate density using mass and volume:
ρ
=
m
V
\rho = \frac{m}{V}
ρ
=
V
m
Calculate the force exerted by a spring using the spring constant and extension:
F
=
k
x
F = k x
F
=
k
x
