Unit 4 Physics

Capacitance volt
The amount of charge stored per volt
1 of 21
Factors affecting capacitance
surface area, insulator type, distance between plates
2 of 21
Graphs for charging Q, V, I
up, up, down
3 of 21
Graphs for dischanging Q, V, I
down, down, down
4 of 21
Energy stored by a capacitor
area under a Q-V graph
5 of 21
Momentum=
mass(kg) x velocity (ms-1)
6 of 21
Principle of Conservation of momentum
providing no external forces act the total momentum before a collision is equal to the total momentum after a collision measured in the same direction
7 of 21
Elastic collision
kinetic energy is conserved as well as momentum
8 of 21
Newton's Second Law
The rate of change of momentum is proportional to the resultant force acting on it and takes place in the same direction as the force
9 of 21
Impulse
The product of the force and the time for which it acts- and hence impulse is the change in momentum of the object on which the force acts. Equal to the area under a force-time graph.
10 of 21
Cetripetal force
produces centripetal acceleration and acts towards the centre of the circle
11 of 21
Simple harmonic motion
an oscillation in which the acceleration of an object is directly proportional to its displacement from the midpoint and is directly towards the midpoint.
12 of 21
Newton's Law of gravitation
Every particle of matter attracts every other particle of matter with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them
13 of 21
Gravitational field strength, g
gravitational force exerted on a unit mass placed at a certain point in the field (NKg-1)
14 of 21
Gravitational potential V
the work done in moving a unit mass from infinity to that point, area under a force-distance graph gives the work done
15 of 21
Kepler's law
T squared= 4pi squared x distance cubed divided by GM
16 of 21
Coulombs Law
The force acting between two charges is proportional to the product of the charges and inversely proportional to the square of their separation.
17 of 21
Electric field strength
the force acting on a unit of positive charge placed at a certain point in the field (NC-1)
18 of 21
Electric potential
the work done us moving a unit positive charge from infinity to a certain point- scalar
19 of 21
Faraday's Law
the induced emf is directly proportional to the rate of change of flux linkage
20 of 21
Lenz's Law
The induced emf is always in such a direction as to oppose the change that caused it
21 of 21

Other cards in this set

Card 2

Front

surface area, insulator type, distance between plates

Back

Factors affecting capacitance

Card 3

Front

up, up, down

Back

Preview of the back of card 3

Card 4

Front

down, down, down

Back

Preview of the back of card 4

Card 5

Front

area under a Q-V graph

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Capacitors resources »