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Going in Blind (ITS A TRAP)
100

two charges of 0.003 C each are separated by a distance of 2.4 meters.  This is the electric force between them

What is 14047 N

100

Two charges that attract

What is opposite charges

100
The SI unit of charge
What is a coulomb
100
a dude has a weight of 400 N but then flies in a rocket to get to a distance of 10 times his original distance from his planet's center. this is his new weight

what is 4 N 

400N / 102

100

DID YOU DO #16 from your guided notes?  (if not, go to 3.4 on canvas and click on the guided notes PDF and look it up.... one of them will be on the quiz tomorrow)

what is: I hope so... I even wrote them down so I can use them tomorrow!

200

Two charges are separated by 1m.  If there is already 1N of force acting between the charges but then they are and are pulled from 1 meter apart to 2 meters apart, this is their new force.

What is 0.25N or 1/4 N

You have to look at the equation for Coulomb's Law (check notes if you don't have it handy) and then notice that the force depends on dividing by the distance squared.  This gives 1N divided by 2 squared, or 1/4 N

200

A kid holds a schtick with a -2 charge next to a cat that has a +4 charge.

What will happen if the charge of the sctick is suddenly switched to a +4 charge?

What is: the cat will move away from the schtick even more strongly than it was attracted before.
200
This is the weight of something that has a mass of 300kg on the surface of the earth.

what is 2940 N

(weight equation W = mg where g=9.8)

300*9.8 = 2940

200

A dog zaps a mass with a magic cat-gun, which triples it's mass.  This is its new weight

What is 3x as much (triple the original amount)

200
This is the change in electrical force between a pair of ions when their separation distance is tripled and each charge has been doubled.
What is 4/9ths
300

A new planet was found with a mass of 4.55 x 1025 kg.  Then, a spacecraft with a mass of 3.77 x 105 kg passes within 5.2 x 108 meters of it.  This is the gravitational force acting on the spacecraft.

What is 4.23 x 103 N, or 4230 N

get out the formula for law of universal gravitation, plug and chug, remembering that the distance part MUST be in parenthesis and it also must be SQUARED

300

Two charges are placed next to each other as follows:  Q1 = +2C      Q2 = -1C

What will the charges do when they're let go?

What is move towards each other 

(opposite charges attract)

300
When two charges give a force of +3N, You know this about each of the two charges



they are the same charge (both - or both +)

Using the electric force equation (look up if you need to), you should see that the two charges multiply by each other.  The only way to get a force with a positive charge are by using two charges with the same sign.

300
LOLcat is on top of a huge ladder, there he weighs 50N.  When he falls off of it, he ends up falling to the surface of the earth, that puts him at a distance of only 1/4 as much as before he fell.  This is LOLcat's new weight

what is 800N

50 / (.25)2

300

Two charges are placed next to each other as follows:  Q1 = +5C      Q2 = 0C

What will the charges do when they're let go?

What is ABSOLUTELY NOTHING

(use the equation: if one of the charges is zero, the whole thing becomes zero too)

400

This is how much force there is when there is one charge of 0.000013C 5m away from another charge of 1.0C

What is 4680N?

9*109*0.000013*1/(52) =

400

This part of an atom can freely move, creating electric charges in the process

What are electrons? 

Protons and neutrons DON'T NORMALLY MOVE

400
Two positively charged atoms are placed next to each other.  When they're let go, they do this

What is move apart (if they're the same charge, they repel.  If they're opposite charges, they attract)

400

Some block of nasty cat food has a weight of 100N.  A cat shoots this mass with a dog-gun.  It sends it 5x farther away from the planet than right before it got shot.  It also changes the mass to 4x as much as when it started.  This is the cat-food's new weight

What is 16 N

100 *4 / (5)2

400
The man on the $100 bill who also was the first person to discover that lightning and electricity in the laboratory were the same phenomenon
What is Who was Benjamin Franklin?
500

A satellite sits on a launchpad, waiting to launch.  Here, it has a mass of 4000 kg.  The mass of the earth is about 6 x 1024 kg.  While it's sitting on the launchpad, the satellite is 6.4 x 106 meters from the center of the earth.  When the satellite is in orbit, however, it's distance to the center of the earth is 6.6 x 106 m.  This is how much gravitational force is exerted on the satellite when it's in space, orbiting the earth

What is 3.67 x 104 N, 

OR I also would have accepted something like:

"... just a little bit less gravitational force than when it was on the launchpad"

500

A main difference between gravitational and electric forces is that the electrical forces...


what is repel OR attract

500

A charged ball hanging by a thread is placed between two charged rods.  The charge of the LEFT rod is +10C.  The charge of the RIGHT rod is +30C. 

If the charge of the ball is +25C, the ball will move this way

What is to the left 

the charge on the right rod is stronger than the one on the left rod, so it controls the situation.  Since the right rod and ball have the same sign, they repel. This means the rod on the right pushes the ball towards the ball on the left since it has a bigger charge & a bigger repelling force

500
Two electric charges are attracted to each other with a force of 10N.  Then, they are souped up and they each have their charge increased by 3x.   At the same time, someone moves the charges to a distance three times further than when they started.  This is the new force:

What is THE SAME FORCE AS WHEN THEY STARTED (10N)

10N *3*3 / (3)2

500
The neutrally charged particle in the atom
What is a neutron