Electrostatics
A material that freely allows the flow of electricity.
Conductor
attractive force between two massive objects
gravity
If I double the distance, the force is ....
divided by four
The town that is adjacent to the school of Wizardry and Witchcraft.
Hogsmeade
the difference between gravitational force and electrostatic force.
gravitational force is always attractive.
electrostatic force can be attractive or repulsive, depending on the charges.
A material that resists the flow of electricity.
Insulator
mg
weight
if I triple the distance, the force is
divided by 9
The owners of the joke/gag store on Diagon Alley.
Fred and George Weasley
If both charges are doubled, and the distance is doubled, by what factor is the electric force changed?
1 (no change)
A material that allows the flow of electricity under the right conditions.
Semiconductor
GM/r2
g on a planet of mass M and radius r
if I halve the distance, the force is ...
quadrupled
The wizarding house that Voldemort belonged to.
Slytherin
Inventor of the lightening rod
Ben Franklin
The subatomic particle that carries the fundamental negative charge.
electron
the force that keeps planets in orbit around a star
gravity
if I cut the distance to one third, the force is ...
increased by 9
The spell that creates light from the tip of the wand.
Lumos
affects the color of lightening
humidity, temperature, pollution
The subatomic particle that carries the fundamental positive charge.
proton
units of acceleration
m/s2
the distance I must separate two massive objects before the force of gravity between them is zero
infinity
The spell that extinguishes light from the tip of the wand.
nox
Only other president to serve non-consecutive terms
Grover Cleveland