What is the formula for the weight force of an object?
W = mg
100
Which famous physicist did thought experiments to explain the motion of projectiles?
Galileo
100
Identify the main functional difference between a motor and a generator
Motor: electrical energy -> kinetic energy
Generator: kinetic -> electrical
100
Identify the two applications of the motor effect as outlined in the syllabus
The galvanometer and the loudspeaker
100
A student conducted an experiment to identify the relationship between launch angle and range of the projectile by launching a projectile at an angle of 20degrees, 30 degrees and 50 degrees.
Identify the dependent variable.
Range of the projectile
200
What does formula 1 calculate?
The force between two parallel current carrying conductors
200
Identify the two physicists who attempts to measure the speed of the Aether wind
Michelson and Morley
200
Name the two forces that JJ Thomson balanced to calculated the charge to mass ratio.
Force on a charge in a B field and centripetal force
200
Identify a possible application of superconductors
Maglev trains, power transmission, power storage, computing
200
What is the purpose of repeating an experiment several times.
To ensure reliability
300
What does the h represent in formula 2?
Planck's constant
300
Alongside Edison and Westinghouse, which scientist played a significant role in generating electricity for the cities
Nikola Tesla
300
What is the purpose of a transformer
To step up or step down an AC voltage
300
What has been the most significant impact of the invention of transistors
The development of microchips and microprocessors
300
Name the SI units for magnetic flux density
Weber per metre squared
Wb/m^2
400
Using formula 3, what does T represent?
The period of a binary star
400
Name the two scientists who used xrays to determine the structure of crystals
William Henry Bragg and William Lawrence Bragg
400
Give one key difference between a low earth orbit and a geostationary orbit
Period, Radius of orbit, Orbital decay, location
400
The introduction of solar cells has given us the ability to reduce our reliability on energy from fossil fuels.
Identify the two main concepts that are used in photovoltaic cells.
The photøelectric effect and semiconductors
400
Convert 700 nanometers to metres
7 x 10^-7m
500
In formula 4, which variable represents the "contracted length"
lv
500
Name the three physicists for whom the BCS theory was named
Bardeen, Cooper and Schrieffer
500
Give an outline of Lenz's Law
An induced current will generate a magnetic field that opposes the B field of the inducing current
500
Outline one real world piece of evidence that supports Einstein's thought experiments on special relativity
Time dilation - atomic clocks on a plane
Mass dilation - particles in a particle accelerator
500
Which of the following is not a vector quantity:
-Magnetic field strength
-Electric field strength
-Gravitational force
-Energy of a photon
-Current in a wire