physics paper 2

Question 1

q1

Answer 1

4.1/10x0.26=1.6

Question 2

q2

Answer 2

v=square root of 2x4.1/1.6=2.3

Question 3

suggest one way to reduce the difference between actual and expected velocity

Answer 3

reduce friction between the trolley and the runway

Question 4

q4

Answer 4

w=48x10=480
work done=480x2.9=1392
power=1392/3.4=409.4
=410

Question 5

state the frequency of the supply of electricity to homes in the uk

Answer 5

50 hz

Question 6

q5

Answer 6

0.53x230=121.9
=122

Question 7

what is the fuse connected to?

Answer 7

live wire

Question 8

q6

Answer 8

p and q

Question 9

describe the change in the motion of the wax particles as the wax changes from liquid to solid

Answer 9

the particles lose kinetic energy, so they move more slowly

they stop moving freely past each other and vibrate in fixed positions in a regular arrangement

Question 10

q7

Answer 10

3.9/830
=4.7 x 10^-3

Question 11

q8

Answer 11

missing value=48-35=13

Question 12

use figure 8 to describe the relationship

Answer 12

as the number of plastic strips increases, the mean number of nails picked up decreases

this shows a negative correlation