Working as a Physicist

Question 1

pico

Answer 1

x10^-12

Question 2

nano

Answer 2

x10^-9

Question 3

micro

Answer 3

x10^-6

Question 4

milli

Answer 4

x10^-3

Question 5

kilo

Answer 5

x10^3

Question 6

mega

Answer 6

x10^6

Question 7

giga

Answer 7

x10^9

Question 8

terra

Answer 8

x10^12

Question 9

Name the seven SI units

Answer 9

Metre (m) - length
Kilogram (kg) - mass
Second (s) - time
Ampere (A) - current
Kelvin (K) - temperature
Mole (mol) - amount of substance
Candela (cd) - luminous intensity

Question 10

What are the two rules for combining uncertainties?

Answer 10

1. multiplying/dividing two measurements: percentage uncertainties are added
2. measurements that are subject to powers: multiply by the power

Question 11

How do you calculate percentage uncertainties?

Answer 11

(resolution/reading)x100

Question 12

What is a scalar quantity?

Answer 12

A quantity with magnitude only

Question 13

Scalar quantity examples

Answer 13

Speed
Distance
Energy
Time
Power
Charge
Current
Voltage

Question 14

What is a vector quantity?

Answer 14

A quantity with both a magnitude and direction

Question 15

Examples of vector quantities

Answer 15

Velocity
Displacement
Force
Acceleration

Question 16

Define speed

Answer 16

The rate of change of distance

Question 17

Define velocity

Answer 17

The rate of change of displacement

Question 18

Define distance

Answer 18

How much ground an object has covered during its motion

Question 19

Define displacement

Answer 19

How far out of place an object is and the overall change in the objects position