What formula would you use to calculate the weight force of an object?
W = mg
100
Identify the scientist who conducted thought experiments relating to the motion of projectiles.
Galileo
100
Name the main functional difference between a motor and a generator
A motor converts electrical energy to kinetic energy and a generator converts kinetic energy to electrical energy.
100
Identify the two applications of the motor effect that are outlined in the syllabus
The galvanometer and the loudspeaker
100
If I conducted an experiment with different coolants to determine the critical temperature of a new superconductor. Identify the independent variable.
Type of coolant
200
What does this formula calculate? (formula 1)
Force between two parallel current carrying conductors.
200
Identify the scientists who performed repeated experiments to attempt to measure the relative speed of the Aether wind
Michelson and Morley
200
What are the two forces that JJ Thomson attempted to balance in his cathode ray tubes.
Force on a charge in a magnetic field and centripetal force.
200
Identify two applications of superconductors
-Maglev trains
-Superconducting power grid
-Power storage
200
Give an example of a practical in which technology was used to collect data
Ipad as a light meter, measuring light intensity (or other)
300
What would you calculate using formula 2
Energy of each photon released in the photoelectric effect
300
Identify the scientists who won a nobel prize for determining the crystal structure
William Henry Bragg and William Lawerence Bragg
300
Why would dumping fuel from a spaceship cruising in space give it a force.
By the conservation of momentum, if the mass decreases then the velocity must increase and this increasing velocity is due to a force caused by Newton's 3rd Law
300
Identify one situation in the real world where Eddy currents are produced.
Iron core of transformers
300
Convert 700 nanometres to metres
7 x 10^-7
400
In this formula, what does T represent?
Period of a binary star
400
Identify the third main scientist (other than Edison and Westinghouse) who was significant the process of generating electricity the the masses
Nikola Tesla
400
The acceleration due to gravity on a planet depends on which two variables?
Mass of the planet and the radius of the planet
400
Photovoltaic cells have allowed us to harness energy from the sun and move away from a dependence on fossil fuels.
Identify the two main concepts that underpin solar photovoltaic cells.
Photoelectric effects and Semiconductors
400
What is the purpose of repeating an experiment?
To get reliable data
500
In the formula for length contraction what does lo represent?
Stationary length (length as observed from a relatively stationary observer)
500
Which scientist developed a law that stated "An induced EMF always gives rise to a current that creates a magnetic field that opposes the original change in flux through a circuit."
Lenz
500
Outline two key differences between a geostationary orbit and a low earth orbit
-Difference in period of revolution, location, radius of orbit
500
Give on real world piece of evidence that supports Einstein's though experiments about special relativity.
Time dilation - atomic clocks on a plane
Mass dilation - particles in particle accelerators
500
Outline the difference between a first hand and secondary investigation.
In a first hand investigation you collect the data yourself, secondary you analyse another persons data/information