last minute stuff to know

Question 1

Quark structure of proton

Answer 1

uud

Question 2

Quark structure of neutron

Answer 2

udd

Question 3

β- decay in terms of quarks

Answer 3

d –> u + e- + vbar

Question 4

β+ decay in terms of quarks

Answer 4

u –> d + e+ + v

Question 5

β- decay in terms of atom

Answer 5

n –> p + e- + vbar

Question 6

β+ decay in terms of atom

Answer 6

p –> n + e+ + v

Question 7

standard procedure to reduce errors?

Answer 7

take repeat readings! :)

Question 8

When asked to find errors shown by a graph what should you look for?

Answer 8

• Systematic error if line does not pass through (0,0) (if it should)
• Random error if points are spread around line of best fit

Question 9

when you see a graph…

Answer 9

ALWAYS CHECK AND REMEMBER UNITS

e.g. MILLIseconds

Question 10

the examiners like proportional signs lol

Answer 10

xd

Question 11

which for charging capacitor which for discharging?

Answer 11

e^x for charging (1-e^x) for discharging

- Apart for current which is e^x for both

Question 12

at what distance is strong nuclear force repulsive?

Answer 12

strong nuclear is repulsive at < 0.5fm

Question 13

at what distance is strong nuclear force attractive?

Answer 13

strong nuclear is attractive at > 3fm