SI Units
This is the unit for force.
Review: __ = ma
What is F?
This is the simplified value for 1/(52)
What is 1/25? (or 0.04)
This professor, who shows demonstrations during lectures, is known for his catchphrase "Go frolic."
Who is Professor Johnson?
This team played against Iowa's football team on Saturday.
What is Iowa State?
This is the unit for electric charge.
What is a coulomb?
Coulomb's law: F = kq1__/ r2
What is q2?
This trigonometric function of theta equals the side length of the opposite length divided by the length of the hypotenuse.
What is sine?
In one demo, the professor rubbed this object on top of his head to build static charge.
What is a balloon?
This video game, the sequel to a 2017 game by Team Cherry, released on September 4th.
What is Hollow Knight: Silksong?
This is the unit for the electric field.
What is a newton per coulomb (N/C)?
-or-
What is a volt per meter (V/m)?
Electric field from a ring of charge:
Ez = kQz / (z2+__2)3/2
What is R?
This is the simplified value of (10-12)*(108)
What is 10-4?
In one of the first demos of the course, the professor rubs a PVC pipe with this dead animal to build a static charge.
What is a rabbit?
September 2nd was the 44th birthday of this singer of Crazy In Love, Halo, and Single Ladies (Put a Ring on It).
Who is Beyoncé?
This is the unit for the *surface* charge density.
What is a coulomb per meter squared? (C/m2)
Electric field from infinite sheet of charge: Ez = __ / 2ε0
What is σ?
This is the approximate value of the elementary charge, i.e. the charge of the proton, in SI units. (units not required in answer)
What is 1.6*10-19?
In one demo, the professor manipulated the flow of water from a hose because water molecules have this property. (If you don't remember the word, a correct explanation will count)
What is being polar?
A new film in this horror series, which included 2014's Annabelle, released on September 3rd.
What is The Conjuring?
This is the unit for ε0. You have two minutes to work this out using equation balancing.
What is a coulomb squared per Newton meter squared (C2/Nm2)?
-or-
What is a farad per meter (F/m)?
Electric field from dipole: E = 2k__ / z3
What is p?
This is the approximate value of k as we use it in this course (units not required but the number must be right)
What is 8.99*10^9?
This material, kept suspended in gel, aligns with electric field lines in many of the demos seen projected on the TV during lecture.
What is felt?
September 3rd marked the 48th anniversary of the launch of this spacefaring probe, the first to leave the heliosphere.
What is Voyager 1?
Fun fact: The Plasma Wave instrument on Voyager 1 was built by University of Iowa physicists!