Forces
Electricity
Speed
Magnetic fields
Topic 9
100
10 Newtons per kilogram
What is the gravitational force on earth?
100
Parallel and series
Two different ways of wiring up a circuit
100
km/h, m/s or mph
The units for speed are..
100
Points to north
A compass needle
100
What is a discrete function?
Non-linear. Not continuous. Limited.
200
air resistance
What is the force that slows a vehivle down?
200
=Resistance
voltage divided by current
200
mean or average speed
The total distance travelled by the total time taken.
200
Iron
A material that is attracted to a magnet
200
3rd
300
Another name for a fulcrum
A pivot
300
....depends on these 3 things -
The material from which it's made, the length, the thickness
Resistance
300
distance/ time
speed =
300
By increasing the number of turns on the coil, increasing the current or using an iron core
You can increase the strength of an electromagnet by...
300
Is the equation x+y=-20 discrete or continuous?
Continuous because it forms a line and includes negative #'s, as well as decimals.
400
The clockwise moment is equal to the anticlockwise moment
When a force is balanced
400
The bulbs will share the current and be dimmer than if they were on their own.
If bulbs are wired up in series
400
A straight line on a distance/time graph
When the car is stationary there is.....
400
Is the same as that of a bar magnet
The magnetic field around an electromagnet
400
2nd one
500
The greater the moment
The longer the distance from the pivot
500
The current splits at the junction of 2 wires
in a parallel circuit
500
The speed of a faster car compared with a slower car
Relative speed is...
500
...affects the direction of the north and south poles on an electromagnet.
The way the current is flowing through the wires in the coil
500
Part A: An equation that represents the situation is?
Part B: This equation has how many situations?
Part C: because?
Part D: Give an example of an ordered pair?
b+g=12
a finite # of solutions
the # of boys or girls must be a natural #
ordered pair equal to 12 when added