2
L2–PHYSR
992603
Level 2 Physics, 2010
2.00 pm Wednesday 17 November 2010
RESOURCE SHEET
for 90254, 90255 and 90257
Refer to this sheet to answer the questions in your Question and Answer booklets.
Check that this sheet is printed on the back.
YOU MAY KEEP THIS SHEET AT THE END OF THE EXAMINATION.
© New Zealand Qualifications Authority, 2010
All rights reserved. No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.
2
You may find the following formulae useful.
90254 Demonstrate understanding of waves
1
1 1
=
+
f do di
si so = f 2
or
90257 Demonstrate understanding of
electricity and electromagnetism
E=
m=
di hi
=
do ho
m=
or
n1 v2 λ2
= =
n2 v1 λ1
n1 sin θ1 = n2 sin θ 2
v = fλ
f si
=
so
f
f =
1
T
v=
d
t
Ek =
V
d
F = Eq
1 2
mv
2
I=
q
t
V=
L2-PHYSR
1 2
at
2
d=
vi + vf
t
2
vf 2 = vi 2 + 2ad
v2
ac =
r
F = ma
τ = Fd
F = −kx
Fc =
mv 2
r
p = mv
Δp = FΔt
Ep =
1 2
kx
2
W = Fd
Ek =
1 2
mv
2
P=
ΔEp = mgΔh
W
t
circumference of circle = 2!r
where needed, use g = 9.8 m s –2
F = BIL
V = IR
P=
RT = R1 + R2 + ...
d = vit +
ΔE
q
P = IV
Speed of light in a vacuum = 3.00 × 108 m s –1
90255 Demonstrate understanding of mechanics
Δd
Δv
v=
a=
vf = vi + at
Δt
Δt
ΔEp = Eqd
ΔE
t
1
1
1
=
+
+ ...
RT R1 R2
F = Bqv
V = BvL