2.1 - Physical Quantities and Units

Question 1

What are S.I base units?

Answer 1

The Système International (S.I) includes a set of base units for physical quantities from which lots of other units are derived.

Question 2

What is ‘checking the homogeneity of physical equations’?

Answer 2

This is when you check that the units of an equation are the same on both sides.

Question 3

What is ‘checking the homogeneity of physical equations’?

Answer 3

This is when you check that the units of an equation are the same on both sides and therefore the validity of the equation.

Question 4

What is the prefix for milli and what is the power of 10 multiple?

Answer 4

m

x10^-3

Question 5

What is the prefix for micro and what is the power of 10 multiple?

Answer 5

μ

x10^-6

Question 6

What is the prefix for nano and what is the power of 10 multiple?

Answer 6

n

x10^-9

Question 7

What is the prefix for pico and what is the power of 10 multiple?

Answer 7

p

x10^-12

Question 8

What is the prefix for kilo and what is the power of 10 multiple?

Answer 8

k

x10^3

Question 9

What is the prefix for mega and what is the power of 10 multiple?

Answer 9

M

x10^6

Question 10

What is the prefix for giga and what is the power of 10 multiple?

Answer 10

G

x10^9

Question 11

What is the prefix for tera and what is the power of 10 multiple?

Answer 11

T

x10^12