Intro to Physics and Measurements (1)

Question 1

What is physics?

Answer 1

The properties, behavior, and interaction of matter and energy.

Question 2

What is the language of physics?

Answer 2

Mathematics

Question 3

What are the subdivisions of Physics?

Answer 3

Classical Mechanics, Thermodynamics and Statistical Mechanics, Electromagnetism, Relativity, Quantum Mechanics

Question 4

What is Electromagnetism?

Answer 4

study of electricity and magnetism

Question 5

What is Thermodynamics and Statistical Mechanics?

Answer 5

study of energy

Question 6

What is Classical Mechanics?

Answer 6

study of motion

Question 7

What is Relativity?

Answer 7

study of the relationship of electromagnetism and mechanics

Question 8

What is Quantum Mechanics?

Answer 8

study of physics on an atomic and subatomic level

Question 9

What are basic quantities?

Answer 9

Foundations of all quantities in physics

Question 10

What are derived quantities?

Answer 10

Combination of basic quantities

Question 11

What are the basic quantities for length?

Answer 11

miles, light year, cm, m, in, ft

Question 12

What are the basic quantities for mass?

Answer 12

g, kg, lb, ton, amu

Question 13

What are the basic quantities for time?

Answer 13

s, min, hour, day, year

Question 14

What is volume?

Answer 14

a substance’s mass per unit volume

Question 15

What is the formula for a rectangular prism’s volume?

Answer 15

lwh

Question 16

What is the formula for a cone’s volume ?

Answer 16

1/3(₶)r^2h

Question 17

What is the formula for a sphere’s volume ?

Answer 17

4/3(₶)r^3

Question 18

What is the formula for a cone’s volume ?

Answer 18

1/3₶r^2h

Question 19

What is the formula for a cylinder’s volume ?

Answer 19

₶r^2h

Question 20

What is density?

Answer 20

substance’s mass per unit volume

Question 21

How can you explain density relative to water?

Answer 21

less dense than water = float

denser than water = sink

Question 22

SI unit of density?

Answer 22

kg/m^3

Question 23

Relationship of m,v, and ρ ?

Answer 23

m and rho are directly proportional

v and rho are inversely proportional

Question 24

What is SI?

Answer 24

International System or Systeme Internationale d’ Unites

Question 25

Length in SI and US Customary System

Answer 25

meter (m) in SI, foot (f) in US

Question 26

Time in SI and US Customary System

Answer 26

seconds (s) in SI and US

Question 27

Mass in SI and US Customary System

Answer 27

kg (kilogram) in SI and slug (lb s^2/ft) in US

Question 28

Force in SI and US Customary System

Answer 28

Newton (N) in SI and pounds (lb ) in US

Question 29

Si prefixes

Answer 29

tera, mega, giga, kilo, hecto, deca, deci, centi, mili, micro, nano, pico

Question 30

1 mi in ft

Answer 30

5280 ft

Question 31

1 kg in pounds

Answer 31

2.2

Question 32

How many minutes in a year?

Answer 32

525,600

Question 33

How many seconds in a day ?

Answer 33

86, 400

Question 34

cc?

Answer 34

cubic centimeter

Question 35

What is a scalar measurement?

Answer 35

quantity measured by magnitude alone

Question 36

What is a vector?

Answer 36

quantity described by magnitude and direction

Question 37

Properties of a vector?

Answer 37

Magnitude (length), Direction (where it is pointed)

Question 38

Represents a vector

Answer 38

A ray

Question 39

Parts of a ray

Answer 39

point (tail or origin) | head (pointed to a particular direction)

Question 40

Direction can be represented in two ways, what are they?

Answer 40

four primary directions, angles

Question 41

12 directions

Answer 41

North, East of North, North of East, East, South of East, East of South, South, West of South, South of West, West, North of West, West of North

Question 42

Angles of Direction

Answer 42

East (0 degrees) North (90) West (180) South (270)

Question 43

Where are they headed, parallel vectors?

Answer 43

same direction

Question 44

Where are they headed, anti-parallel vectors?

Answer 44

same direction

Question 45

Two ways of vector addition?

Answer 45

Graphical and Component

Question 46

Sum of V1 and V2

Answer 46

resultant

Question 47

in a 30-60-90 triangle, what is the value of the side opp 30 and the side opp 60?

Answer 47

opp 30 - 1/2 (side opp 90) | opp 60 - sqrt3/2 (side opp 90)