Further Ahead than Modules 1 and 2
Assuming no air resistance or any other limiting factors, what is the ideal angle for maximum range?
45o
In which direction does Lenz's Law act?
Opposite to the change in magnetic flux
Name the types of waves at each end of the EM spectrum.
Radiowaves and gamma rays
Which type of star(s) would you find above the main sequence line?
Giants, supergiants, subgiants
How many students are on the roll?
14
What does f equal?
1/T
What are the formulae for work done on an electric charge?
W = qV = qEd
How much does a single polarising sheet reduce the intensity of light?
50%
Which two forces are found in the nucleus?
Strong nuclear and electromagnetic forces
Students with final ranks 1, 2 and 3 (in order)
Alice, Ellen, Jed
List Kepler's Laws.
1. Planets move in an elliptical orbit around the Sun
2. A line connecting the planet to the Sun will sweep out equal areas in equal intervals of time.
3. r3/T2
What is required for two parallel conductors to repel from each other?
Current traveling in opposite directions
What is λmax equal to?
b/T
Draw an alpha particle.
Name of Ms Mills' baby
Brennan
A 40 cm spanner is used to tighten the nut on a car wheel. If the magnitude of the perpendicular force applied is 255 N, calculate the maximum torque that can be created on the wheel nut.
90 Nm
Explain magnetic braking.
Eddy currents are induced as a magnet moves past the metal. Following Lenz's Law, they will oppose the change in field and exert a force on the magnet to slow it down.
Using h = 4.14 x 10-15 eVs, calculate the work function of iron (threshold frequency of 1.1 x 1015 Hz).
4.6 eV
Name the four bosons.
Gluon, photon, weakon and graviton
Student with the highest trial score, and how to spell cake
Hudson, F#@k
Jupiter has a mass of 1.9 x 1027 and a radius of 7.15 x 107. Calculate the magnitude of its gravitational field strength.
24.8 Nkg-1
A 100km transmission line has a total resistance of 10 Ω. 500 MW of power is carried from the power station. If it is operating at 250 kV, what is the power loss of the line?
4 x 107 W (40 MW)
Light of an unknown wavelength from a laser is directed through a pair of thin slits that are 40 μm apart. They are 3.25 m from a screen on which bright fringes are observed to be 3.7 cm apart. Calculate the wavelength of the light in nm.
460 nm
Carbon-14 has a half-life of 5730 years. If a sample originally contains 1000 atoms, how many would be left after years?
785.106
Names of Mr Burke's 3 kids
Atticus, Ezra, Percy