Si Units

Question 1

What are the 6 base quantities

Answer 1

Mass
Length
Time
Current (I)
Temperature
Amount of substance (n)

Question 2

What is the 6 base units

Answer 2

Kilogram
Metres
Seconds
Amps
Kelvin ( k)
Mole

Question 3

What is the prefix called that is 10^12

Answer 3

Terra

Question 4

Prefix - 10^9

Answer 4

Giga

Question 5

Prefix - 10^6

Answer 5

Mega

Question 6

Prefix - 10^3

Answer 6

Kilo

Question 7

Prefix - 10^-3

Answer 7

Milli

Question 8

Prefix - 10^-6

Answer 8

Micro

Question 9

Prefix - 10^-9

Answer 9

Nano

Question 10

Prefix - 10^-12

Answer 10

Picko

Question 11

Prefix- 10^-15

Answer 11

Femto

Question 12

Write 1,000,000 HZ using prefix

Answer 12

1 MHz

Question 13

Write 0.004 V using prefix

Answer 13

4 mV

Question 14

How to turn a 0.000007A into prefix

Answer 14

Turn into standard form then pick the prefix that matches and write together
Sf- 7 * 10^-6
The prefix for 10^-6 is micro
Answer= 7 mA

Question 15

How many meters per second are there in km per hour

Answer 15

3.6

Question 16

How many watts ar 1 joule

Answer 16

1

Question 17

Express work done in si based units

Answer 17

1- find work done equation
Work done = force * distance / displacement
Displacement = m ,force = N (what they measured in)
Newton is not an si unit so you have to do the equation for force to get si base units
2- force equation
F = m a
Mass= kg , acceleration = ms^-2
3- now combine
Answer= kgm^2s^-2

Question 18

What unit is ms

Answer 18

Millisecond

Question 19

Turn 100 pics seconds into seconds

Answer 19

100 * 10^-12
= 10*10^-10

Question 20

Conver 34 m^2 to cm^2

Answer 20

340000

Question 21

How many micro metered in a centimetre

Answer 21

10,000

Question 22

What does the area under an acceleration + time graph represent

Answer 22

Velocity (ms^-1)

Question 23

what is the area under a force x meter graph

Answer 23

energy (j)

Question 24

how do you know what SF to use when rounding an answer

Answer 24

add the same SF as the smallest number of data