Motion
An object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
What is Newton's first law (inertia)
This is the direction in which the gravitational field acts around a mass.
What is towards the mass
This law states that an electromotive force (emf) is induced in a circuit when the magnetic flux through the circuit changes.
What is Faraday’s Law of Electromagnetic Induction?
This type of pattern is observed on a screen when light passes through two closely spaced slits in Young’s double-slit experiment.
What is an interference pattern
In the photoelectric effect, this is the term for the minimum energy required to remove an electron from the surface of a metal.
What is the work function?
A 1.5 kg ball is pushed horizontally against a spring against a wall. The spring is compressed by 5 cm and then released, launching the ball at 1.15 m/s. Calculate the spring constant (ignore friction).
What is 794 N/m
If two point charges are 0.5 metres apart in a vacuum and the distance between them is doubled, this is what happens to the electric force between them.
What is it becomes one quarter as strong (decreases by a factor of 4)?
This will increase the magnitude of the induced emf in a coil.
What is increasing the rate of change of magnetic flux (or increasing the speed of movement, number of coil turns, or strength of the magnetic field)?
If the slit separation in a double-slit experiment is decreased, this happens to the spacing between the bright fringes.
What is it increases
This property of light determines whether electrons are emitted from a metal surface.
What is the frequency (or energy) of the incident light?
A 4 kg block is placed on a frictionless table and connected by a light cord over a frictionless pulley to a 6 kg block hanging off the edge. If the system is released from rest, what is the magnitude of the acceleration of the blocks?
What is 5.88 m/s²
This is the magnitude of the force acting on a proton when it is released from rest in a uniform electric field of strength 2,000 N/C.
What is 3.2 × 10⁻¹⁶ newtons?
An ideal transformer has 200 turns in the primary coil and 50 turns in the secondary coil. If the input voltage is 240 V AC, this is the output voltage.
What is 60 V
When electrons are fired one at a time through a double slit and an interference pattern gradually appears, this property of matter is demonstrated.
What is the wave-like nature of electrons?
The gradient of the line in a maximum kinetic energy - frequency graph
What is Plank's constant
A person pushes a 50 kg crate on a horizontal surface with a force of 200 N. If friction is 147 N between the crate and the surface, what is the acceleration of the crate?
What is 1.06 metres per second squared
A proton (m=1.6x10-27 kg) moves at right angles to a uniform magnetic field of 0.8 T and follows a circular path of radius 0.12 m. This is the velocity of the proton.
What is 9 600 000 m/s
A coil of 200 turns experiences a uniform change in magnetic flux of 0.04 Wb over 0.2 seconds. This is the magnitude of the induced emf in the coil.
What is 40 V
A double-slit experiment uses light of wavelength 600 nm, slit separation 0.2 mm, and the screen is 1.5 m away. Calculate the distance between the first and third bright fringes.
What is 9 mm
In a photoelectric experiment, increasing the intensity of light above the threshold frequency while keeping the wavelength of incoming light the same has this effect
What is increased current
Two ice skaters, Skater A (60 kg) and Skater B (40 kg), stand facing each other on frictionless ice. If Skater A pushes Skater B with a force of 120 N for 0.5 seconds, what are the final velocity of skater B immediately after the push?
What is 1.5 metres per second away from skater A
Two parallel wires, each carrying current in the same direction, are placed close together. This is the type of force (attractive, repulsive, no force) experienced between the wires
What is an attractive force
A circular coil lies flat on a table. A bar magnet is held above the centre of the coil with its north pole facing down towards the coil. The magnet is then rapidly pulled upwards, away from the coil. In which direction (clockwise or anticlockwise as viewed from above) does the induced current flow in the coil?
What is anticlockwise
This is the reason why electron microscopes can reveal much finer detail than light microscopes.
What is they use particles with much shorter wavelengths than visible light, so diffraction is reduced
A metal has a work function of 2.5 eV. If light of wavelength 400 nm is shone onto it, calculate the maximum kinetic energy of the emitted electrons in electron-volts (eV).
What is 0.6 eV