practical skills

Question 1

when doing gradient triangle - smallest side of triangle must be

Answer 1

8cm

Question 2

percentage uncertainty - using measurement on bottom

Answer 2

x2 on bottom first e.g. 0.5 A –> 1A

Question 3

fore grad if x 10 -14 on x or y axis

should you include ?

Answer 3

YES

Question 4

uncertainity in a measuremement

Answer 4

smallest division x 2

–> explain : 2 uncertainties must be included both ends have a ±0.5 division uncertainty

Question 5

3 things conserved in all reactions

Answer 5

charge
B1
baryon number
B1
lepton number

Question 6

3 ways strange particle different

Answer 6

contains a strange quark
or longer half life than expected
or decays by weak interaction

Question 7

t^2 percentage uncertainity t

Answer 7

x2

Question 8

1 giga

Answer 8

x10 ^9

Question 9

questions on how to show directly proportional have to say

Answer 9

COMPARE ( for constant of proportionality)

Question 10

how to reduce risk of systematic error w/ vernier callipers?

Answer 10

take reading with callipers fully closed (at some stage) and subtract from readings

Question 11

what would resistance of an air gap be

Answer 11

infinity - no current would flow