305KB - NZQA

2
L2–PHYSR
992603
Level 2 Physics, 2012
2.00 pm Wednesday 14 November 2012
RESOURCE SHEET
for 91170, 91171, and 91173
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, 2012. All rights reserved.
No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.
You may find the following formulae useful.
91170 Demonstrate understanding of waves
1 1 1
= +
or
si so = f 2
f do di
91173 Demonstrate understanding of
electricity and electromagnetism
E=
m=
di hi
=
do ho
m=
or
n1 v2 !2
= =
n2 v1 !1
n1 sin !1 = n2 sin ! 2
v= f!
f si
=
so f
f =
1
T
v=
d
t
Ek =
V
d
F = Eq
1 2
mv
2
I=
q
t
V=
ac =
d=
vi + vf
t
2
vf 2 = vi 2 + 2ad
v2
r
F = ma
! = Fd
F = #kx
Fc =
mv 2
r
p = mv
"p = F"t
Ep =
1 2
kx
2
W = Fd
Ek =
1 2
mv
2
P=
"Ep = mg"h
W
t
circumference of circle = 2! r
where needed, use g = 9.8 m s –2
F = BIL
V = IR
P=
RT = R1 + R2 + ...
1
d = vit + at 2
2
!E
q
P = IV
Speed of light in a vacuum = 3.00 ! 108 m s –1
91171 Demonstrate understanding of mechanics
"d
"v
v=
a=
vf = vi + at
"t
"t
!Ep = Eqd
!E
t
1
1 1
= + + ...
RT R1 R2
F = Bqv
V = BvL

Download Report