Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Physics > F5 > Flashcards

F5 Flashcards

1
Q

resultant force

A

a single force that represents the vector sum of two or more forces acting on an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

resolution of forces

A

process of resolving a force into two components

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

equilibrium of forces

A

forces acting on an object produce a zero resulting force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

elasticity

A

the property of an object to return to its original shape and size after the force applied on it is removed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

hooke’s law

A

extension of a spring is directly proportional to the force applied on the spring provided the elastic limit of the spring has not been exceeded

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

frictional force

A

the force that oppose the motion of an object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Pressure

A

Force per unit area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Atmospheric pressure

A

Pressure due to the weight of the layer of air acting on the surface of the Earth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Gas pressure

A

The force per unit area exerted by gas molecules as they collide with the wall of the container

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Pascal’s Principle

A

Pressure applied on an enclosed fluid is transmitted uniformly is all directions in the fluid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Hydraulic system

A

A system that uses liquid to transmit pressure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Buoyant force

A

Force acting upwards on an object immersed in a liquid when there is pressure difference between the upper surface and lower surface of the object

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Archimedes’ Principle

A

An object which is partially or fully immersed in a fluid will experience a buoyant force that is equal to the weight of the fluid displaced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Bernoulli’s Principle

A

When the velocity of the fluid increases, the pressure in the fluid decreases and vice versa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Electric field

A

Region around a charged particle where any electric charge in the region will experience an electric force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Electric field strength

A

Electric force acting on a unit of positive charge placed at a point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Current

A

Rate of flow of charge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Potential difference

A

Work done in moving one coulomb of charge from one point to another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Ohm’s law

A

The potential difference is directly proportional to the current provided that the physical conditions are kept constant

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Ohmic conductors

A

Conductors that obey Ohm’s Law

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Resistance

A

Ratio of potential difference across the conductor to the electric current flowing through it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Resistivity of a conductor

A

A measure of a conductor’s ability to oppose the flow of electric current

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Superconductors

A

Material that conducts electricity without any resistance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Critical temperature

A

The temperature when the resistivity of a superconductor becomes zero

25
Electromotive force
The energy transferred or work done by an electrical source to move one columb of charge in a complete circuit
26
200V, 4000W on an appliance
200J of energy is needed by an electrical source to move one coulomb of charge in a complete circuit
27
Internal resistance
The resistance caused by electrolyte in the dry cell
28
Electrical energy
The ability of the electric current to do work
29
Electric power
The rate of electrical energy transferred
30
Catapult field
Resultant magnetic field produced by the interaction between the magnetic field from a CCC and the magnetic field from a permanent magnet
31
Magnetic field
A region in the surrounding of a magnet which a magnetic material experiences a detectable force
32
Electromagnetic induction
Production of an induced e.m.f in a conductor when there is relative motion between the conductor and a magnetic field or when the conductor is in a changing magnetic field
33
Induced current
The current produced when there is a change in magnetic flux
34
Lenz's law
Induced current always flows in the direction which opposes the change of magnetic flux that causes it
35
Faraday's Law
The magnitude of induced emf is directly proportional to the rate of cutting of magnetic flux
36
Transformer
An electrical device which increases or creases an alternating voltage based on the principle of electromagnetic induction
37
Ideal transformer
Transformer that does not experience any loss of energy
38
Thermionic emission
The emission of free electrons from a heated metal surface
39
Cathode ray
Beams of electrons moving at high speeds in a vacuum
40
Semiconductor diode
Electric component which allows electric current to flow in one direction only
41
Rectification
The process of converting an alternating current into a direct current
42
Full-wave rectification
Process where both halves of every cycle of an alternating cycle is made to flow in the same direction
43
Transistor
An electric component which has 3 terminals
44
Radioactive decay
Process in which an unstable nucleus becomes more stable by emitting radioactive radiation
45
Alpha particle
Helium nucleus which consists of 2 protons and 2 neutrons
46
Beta particle
Fast-moving electron
47
Gamma ray
High-frequency electromagnetic waves
48
Half-life
The time taken for a sample of radioactive nuclei to decay to half of its initial number
49
Nuclear energy
Atomic energy released during reactions such as radioactive decay, nuclear fission and nuclear fusion
50
Nuclear fission
A nuclear reaction when a heavy nuclei splits into two or more lighter nuclei while releasing a large amount of energy
51
Nuclear fusion
Nuclear reaction in which small and light nuclei fuse to form a heavier nucleus while releasing large amount of energy
52
Chain reaction
A self-sustaining reaction in which the products of a reaction can initiate a similar reaction
53
Black body
An idealised body that is able to absorb all electromagnetic radiation that falls on it
54
Thermal radiation
Electromagnetic radiation that includes visible light and radiation that cannot be seen by the human eye such as infrared radiation
55
Quantum of energy
Discrete energy packet and not a continuous energy
56
Photoelectric effect
The emission of electrons from a metal surface when it is illuminated by a beam of light of a certain frequency
57
Work function
The minimum energy required for photoelectron to be emitted from a metal surface
58
Threshold frequency
The minimum frequency required to produce photoelectric effect on a metal

Physics (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions