2.1-2.2 Quantities, Units and Conversions

Question 1

What six base units of the SI system are used in A level Physics?

Answer 1

metre, kilogram, second, Ampere, Kelvin, Mole

Question 2

What six base quantities of the SI system are used in A level physics?

Answer 2

length, mass, time, electric current, absolute temperature, amount of substance

Question 3

What is the base unit of mass?

Answer 3

kg

Question 4

what is the base unit of length?

Answer 4

m

Question 5

What is the base unit of time?

Answer 5

s

Question 6

what is the base unit of current?

Answer 6

A

Question 7

what is the base unit of temperature?

Answer 7

K

Question 8

What is the SI unit of potential difference?

Answer 8

V

Question 9

What are the SI units of density?

Answer 9

kgm^-3

Question 10

What is the SI unit of energy?

Answer 10

J

Question 11

What is the SI unit of power?

Answer 11

W

Question 12

What is the SI unit of charge?

Answer 12

C

Question 13

What is 1m^2 in mm^2

Answer 13

10^6mm^2

Question 14

what is 1m^3 in cm^3

Answer 14

10^6cm^3

Question 15

what is 1km^2 in m^2

Answer 15

10^6m^2

Question 16

What is 1cm^3 in mm^3

Answer 16

10^3mm^3

Question 17

there are 10^24 free charge carriers per m^3 of a material. How many are there per mm^3

Answer 17

10^15

Question 18

10^6 particles strike each mm^2 of a surface per second. How many strike 1m^2 of the surface per second?

Answer 18

10^12

Question 19

If there is one particle per mm^3, how many are there per m^3

Answer 19

10^9

Question 20

Water has a density of 1000kgm^-3. what is this in kgcm^-3?

Answer 20

10^-3

Question 21

Water has a density of 1000 kgm^-3. what is this in gcm^-3

Answer 21

1