# PHYSICS EXAM

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2017-08-09 17:25

## #1

Question | Answer |
---|---|

Science | systematized body of knowledge on facts |

(1) Needs, (2) Problem, (3) Curiosity | Roots of science |

(1) Natural science, (2) Social Science, (3) Applied Science | Main branches of science |

Social Science | Human behavior |

Social Science | politics, economics, history, psychology, sociology |

Applied Science | Application of theoretical sciences |

Applied Science | Medicine, engineering, architecture |

Natural Science | understanding & description of science |

(1) Biological, (2) Physical | 2 branches of Natural Science |

Physics | foundation of all sciences |

(1) Classical Physics & (2) Modern Physics | 2 main branches of Physics |

Classical Physics | Traditional topics in Physics |

Classical Physics | developed before the beginning of the 20th century |

Mechanics | forces acting on body |

Acoustics | Production and propagation of sound waves |

Optics | Light |

Thermodynamics | relationship between & other energy forms |

Electromagnetism | Electric current & magnetism and their relationship |

Modern Physics | Concepts in physics that have surfaced since the beginning of the 20th century |

Nuclear/atomic physics | components, structure and behavior of nucleus of an atom |

Quantum physics | Focus in the indivisible units of energy called quantum as described by the Quantum theory |

Relativistic theory | Phenomena that take place in a frame of reference that's in motion w/ respect to an observer |

Solid state physics | all property of solid material |

Condensed matter physics | property of condensed materials with ultimate goal of developing new materials with better properties |

Plasma physics | 4th state of matter |

Low temperature physics | production & maintenance of temperature down to almost absolute zero & the various phenomena that occur only at such temp |

Accuracy | how close a measurement to true value or accepted value |

Precision | Degree pf exactness to which a measurement can be reproduced |

Scientific notation | compact way of writing over a wide range of values |

Scientific notation | numbers represented by product of multiplying factor & power of ten |

Measurement | quantitative description of a fundamental property or physical phenomenon |

Metric System of Measurement | Designations of multiples and subdivisions of any unit may be arrived at by combining w/ name of the unit |

Systematic Errors (Determinate) | Due to limitations of measuring instruments and skill or carefulness of the experiment |

Random Errors (Indeterminate) | Cause by external factors beyond control of experimenter |

## #2

Question | Answer |
---|---|

Line of Best Fit | Eyeball method |

Direct Proportion | As one quantity increases, the other increases |

Straight Line | Direct Proportion shape |

Inverse Proportion | As one quantity increases, the other decreases |

Oblique Hyperbola | Inverse Proportion shape |

Direct Square Proportion | As one quantity increases, the other increases faster |

Parabola | Shape of Direct Square Proportion |

Inverse Square Proportion | As one quantity increases, the other decreases faster |

Oblique Hyperbola | Inverse Square Proportion shape |

Vector | Magnitude & Direction |

Scalar | Magnitude only |

Simple arithmetic | Adding scalar |

Simple arithmetic | Used for adding vector if they are in the same direction |

Composition Vector | Process of adding the vector |

Composition Vector | Also called as Vector Addition |

Resultant Vector | representation of sum |

Tail-head method | Second vector is drawn such that its connected to the arrowhead of the first vector |

Parallelogram Method | Two vectors, common origin |

Polygon Method | For more than 2 vectors |

## #3

Question | Answer |
---|---|

(1) Inertia, (2) Acceleration, (3) Interaction | Newton's Laws of Motion |

Mass is scalar while Weight is vector | Difference between mass & weight |

Role of doing work; joules per second | Power and it's unit of measurement |

Law of Inertia | Law that stated that the total momentum of a system does not change if there are no net external forces acting on it |

Inelastic | It is when two objects collide and move together as one mass after collision, the collision is called ________________\ |

Elastic | It is the kind of collision, after two objects collide, they move separately with no chage in kinetic energy |

Impulse | It is the product of the net force acting on an object and tge time interval which in the force is acting |

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