Physical Quantities

Question 1

What is the prefix of the symbol T?

Answer 1

Tera

Question 2

What is the prefix of the symbol G?

Answer 2

Giga

Question 3

What is the prefix of the symbol M?

Answer 3

Mega

Question 4

What is the prefix of the symbol k?

Answer 4

Kilo

Question 5

What is the prefix of the symbol m?

Answer 5

Milli

Question 6

What is the prefix of the symbol µ?

Answer 6

Micro

Question 7

What is the prefix of the symbol n?

Answer 7

Nano

Question 8

What is the prefix of the symbol p?

Answer 8

Pico

Question 9

What is the prefix of the symbol f?

Answer 9

Femto

Question 10

What is the prefix of the symbol c?

Answer 10

Centi

Question 11

What is the multiplier of the symbol T?

Answer 11

10^12

Question 12

What is the multiplier of the symbol G?

Answer 12

10^9

Question 13

What is the multiplier of the symbol of M?

Answer 13

10^6

Question 14

What is the multiplier of the symbol k?

Answer 14

10^3

Question 15

What is the multiplier of the symbol c?

Answer 15

10^-2

Question 16

What is the multiplier of the symbol m?

Answer 16

10^-3

Question 17

What is the multiplier of the symbol µ?

Answer 17

10^-6

Question 18

What is the multiplier of the symbol n?

Answer 18

10^-9

Question 19

What is the multiplier of the symbol p?

Answer 19

10^-12

Question 20

What is the multiplier of the symbol f?

Answer 20

10^-15

Question 21

How is a number expressed as in standard form?

Answer 21

A x 10^n (A is a number between 1 and 10; n is the No. of places the decimal point must move)

Question 22

In standard form, if you are dividing the number by ten, what must you do with “x10^n”?

Answer 22

Multiply it by ten

Question 23

What are the seven base quantities?

Answer 23

1- Length
2- Mass
3- Time
4- Electric current
5- Temperature
6- Luminous intensity
7- Amount of substance

Question 24

What are the seven SI units?

Answer 24

1- Metre
2- Kilogram
3- Second
4- Ampere
5- Kelvin
6- Candela
7- Mole

Question 25

What are the seven base symbols?

Answer 25

1- m
2- kg
3- s
4- A
5- K
6- cd
7- mol

Question 26

What is a derived unit?

Answer 26

A unit consisting of two or more SI base units

Question 27

What is velocity in base units?

Answer 27

m/s = ms^-1

Question 28

How do you express joules in base units?

Answer 28

ke = 1/2 x m x v^2
= kg x (ms^-1)^2
=kgms^-2

Question 29

How do you express newtons in base units?

Answer 29

Fr = ma
Fr= kg x ms^-2
F= kgms^-2

Question 30

How do you express momentum in base units?

Answer 30

p=mv
p= kg x ms^-1
p= kgms^-1

Question 31

How do you express moments in base units?

Answer 31

M= fd
M= kgms^-2 x m
M= kgm^2s^-2

Question 32

How do you express watts in base units?

Answer 32

P= E/t = ke/t
P= 0.5mv^2 / t
P= kg x (ms^-1)^2 / s
P= kgm^2s^-2 /s
P= kgm^2s^-3

Question 33

How do you express ohms in base units?

Answer 33

P=I^2 x R
R= P/I^2
R=W/A^2
R=kgm^2s^-3 / A2
R= kgm^2s^-3A^-2

Question 34

How do you express charge in base units?

Answer 34

Q = It
Q= A x s
Q= As

Question 35

How do you express Hertz in base units?

Answer 35

F=1/T
F= 1/s
F= s^-1

Question 36

How do you express pressure in base units?

Answer 36

P= F/A
P= N/A
P= kgms^-2 / m^2
P= kgm^-1s^-2

Question 37

How do you express volts in base units?

Answer 37

P =IV
V= P/I
V= W/A
V= kgm^2s^-3 / A
V= kgm^2s^-3A^-1