Electricity
A coulomb is a measure of what?
Charge
What is the difference between a transverse and longitudinal wave?
Transverse wave oscillate up and down, while longitudinal waves oscillate back and forth
What is the difference between vector and scalar quantities. Provide and example for both.
Vector - quantities that are fully described by both a magnitude and a direction. E.g. displacement, velocity
Scalar - quantities that are fully described by a magnitude (or numerical value) alone. E.g. speed, distance
How to add parallel resistors
1/Rt = 1/R1 + 1/R2 + ...
Who founded Facebook?
Mark Zuckerberg
What are the following measured in:
Current
Voltage
Charge
Amperes
Volts
Coulombs
Which two types of waves make up the start and the end of the EMS?
Start - Gamma Rays
End - Radio waves
I begin sprinting at 20m/s. 10 seconds later I have slowed to 15m/s. What is my acceleration?
-0.5 m/s/s
Ohm's law equation
Voltage = current / resistance
According the song, what gift is given on the 5th day of Christmas?
5 gold rings
In an electric circuit 3 C of charge pass a point in each sec. What is the value of the current?
3 A
Calculate the the refractive index of a medium if the speed of light in the medium is 1.4 x 108 m/s. The speed of light in air is 3 x 108 m/s.
2.14
A girl of mass 60 kg can sprint at 8 m/s. What is her kinetic energy?
1920 J
n1sin(i) = n2sin(r)
Of the three types of rock, which one is made from lava?
Igneous
How much energy does a 12 V battery supply to 3 C of charge?
36 J
If the speed of a wave is 380 m/s and its frequency is 1900 Hz, then the wavelength of the wave will be….
Wavelength = velocity / frequency
W = 380 / 1900
W = 0.2 m
If an object mass =30 Kg on the Earth, what would be it's weight on Earth?
Equation for PE and KE
PE = mgh
KE = 1/2mv2
Who has the Guinness world record for the longest career as a TV presenter?
David Attenborough
Two parallel resistors both having their values 50 and 60 ohms are connected in parallel. The overall current provided by the 100 V source is:
3.66 A
Calculate the critical angle for light travelling from water (n = 1.33) into air (n = 1).
48.75
A 200 kg object is acted upon by a 160 N force. calculate the acceleration of the object.
0.8 m/s/s
Refractive index equation
Speed of light in a vacuum/Speed of light in the medium
Who was the first woman to win a Nobel Prize (in 1903)?
Marie Curie