Fundamental Tools of Physics

Question 1

derived from Greek word physis meaning “nature or natural things”

Answer 1

physics

Question 2

 Branch of natural science that deals with matter and energy and its interactions

Answer 2

physics

Question 3

 both descriptive and predictive in nature

Answer 3

physics

Question 4

nature of physics that deals with conceptual understanding, which involves theories, laws, and principles that explain different phenomena

Answer 4

descriptive

Question 5

nature of physics that involves the use of mathematics as a tool in solving physical quantities in various cases.

Answer 5

predictive

Question 6

the process of determining the value of an unknown quantity by comparing it with some pre-defined standard.

Answer 6

measurement

Question 7

– any quantity that can be measured

Answer 7

physical quantity

Question 8

 Its measurement always involved the comparison of the quantity to be measured with a reference standard of the same kind.

Answer 8

physical quantity

Question 9

reference standard used for the comparison

Answer 9

unit

Question 10

defined as a unit of measurement which has a fixed value that does not change from person to person or place to place

Answer 10

standard unit of measurement

Question 11

• Two major systems of unit of measurement in the world

Answer 11

SI units
English units

Question 12

acronym for the Le Systeme d’Unites that is also known as the metric system

Answer 12

SI units

Question 13

meaning of SI

Answer 13

Le Systeme d’Unites

Question 14

 Standard system agreed upon by scientists and mathematicans

Answer 14

SI unit

Question 15

also known as the imperial system

Answer 15

english system

Question 16

 Once used by nations once ruled by the British Empire

Answer 16

English units

Question 17

 Only the US uses the English units extensively

Answer 17

English units

Question 18

• Seven fundamental physical quantities

Answer 18

1. Length (m)
2. Mass (kg)
3. Time (s)
4. Electric current temperature (A)
5. Amount of substance (mol)
6. Luminous intensity (cd)
7. Temperature (kelvin

Question 19

SI unit for length

Answer 19

m

Question 20

SI unit for mass

Answer 20

kg

Question 21

SI unit for time

Answer 21

s

Question 22

SI unit for electric current temperature

Answer 22

A

Question 23

SI units for amount of substance

Answer 23

mol

Question 24

SI unit for luminous intensity

Answer 24

cd

Question 25

SI unit for temperature

Answer 25

kelvin

Question 26

– physical quantities that cannot be explained in terms of other physical quantities

Answer 26

fundamental quantities

Question 27

quantities which are derived from fundamental quantities (e.g. volume, speed, etc.)

Answer 27

derived quantities

Question 28

units of derived quantities and are deducted rom fundamental units e.g. units of velocity, force, work, etc.

Answer 28

derived units

Question 29

• are the base quantities of a unit system which are independent of other physical quantities.

Answer 29

fundamental quantities

Question 30

• are the quantities which are derived from the fundamental quantities

Answer 30

derived quantities

Question 31

study metric prefix scale

Answer 31

+1

Question 32

1 kilo = ___ base unit

Answer 32

1000

Question 33

1 centi is equal to ___ base unit

Answer 33

0.01

Question 34

1 milli is equal to what base unit

Answer 34

0.001

Question 35

Area

what unit

Answer 35

m^2

Question 36

density

what unit

Answer 36

kg m^3

Question 37

velocity measurement unit

Answer 37

m/s

Question 38

acceleration unit

Answer 38

m/s^2

Question 39

momentum measurement unit

Answer 39

kg m/s

Question 40

force measurement unit

Answer 40

kg m/s^2

Question 41

pressure unit

Answer 41

pascal (Pa), kg/ms^2

Question 42

work measurement

Answer 42

joule (j), kg/ m^2s^-2

Question 43

energy measurement unit

Answer 43

j, kg/ m^2s^2

Question 44

Power unit

Answer 44

watt

Question 45

angle unit

Answer 45

radian (rad)

Question 46

torque unit

Answer 46

N m

Question 47

frequency unit

Answer 47

Hz

Question 48

impulse unit

Answer 48

N s

Question 49

Gravitational Constant unit

Answer 49

N m^2 / kg^2

Question 50

surface tension unit

Answer 50

N m-1

Question 51

angular momentum unit

Answer 51

kg-m2/sec

Question 52

moment of inertia unit

Answer 52

kg. m2

Question 53

A carpet is to be installed in a room whose length is measured to be 12.71m and whose width is measured to be 3.46m. Find the area of the room.

Answer 53

The area of the room is 44.0m2.

Question 54

The volume of a wallet is 8.50 in3 Convert this value to m3 using the definition 1 in = 2.54 cm.

Answer 54

The volume of the wallet is 0.000139m3.

Question 55

Three forces act on a point object: 100 N at 70.0 degrees South of West, 150 N at 50 degrees Northeast, and 200N East. Find their resultant and direction.

Answer 55

The resultant force acting on the point object is approximately 262.84 N at an angle of 4.58o North of East.

Question 56

A solid cube of aluminum (density 2.70g/cm3) has a volume of 0.200 cm3. It is known that 27.0g of aluminum contains 6.02x1023 atoms. How many aluminum atoms are contained in the cube?

Answer 56

Thus, the solid cube of aluminum contains approximately 1.20x1022 atoms.

Question 57

A solid piece of lead has a mass of 23.94g and a volume of 2.10cm3. From these data, calculate the density of lead in SI units (kg/m3)

Answer 57

11,400 𝑘𝑔 𝑚3

Question 58

a 5 N force is applied to the box at an angle of 30o counterclockwise from the positive x axis. What is the X and Y component of force

Answer 58

: the resultant vector force is 8.60 N at 84.46o counterclockwise from the positive x axis

Question 59

study more practice questions for vector quantities/conversion

Answer 59

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