Charging identical metal spheres
Coulomb's Law
Electric forces
Electric fields
Magnetism
100
You touch X to Y. What are the charges on each afterward?
-2Q,-2Q
100
The force between two charges is 50N. If the distance between the charges were doubled, and the size of one of the charges were doubled. What is the new force?
25N
100
The force that X exerts on Y is (>, <, =) the force on Y by X.
=
100
Rank the charges. + is > than -
B>E
100
Magnetic fields point (out of, into) a north pole of a magnet, and point (out of, into) a south pole of a magnet.
out of, and into
200
You touch X to Y, and then touch Y to Z. What are the final charges on X,Y,Z?
+3Q,+1Q,+1Q
200
A charge of -9.73x104C charge is 5.29x103m from a charge of 6.32x10-5C. What is the force on the charges?
1978 N
200
What is the direction of the force on +2Q?
Down and left
200
If a + charge is moved from A to B, how does the + charge's potential energy change?
decrease
200
Explain why a magnet will attract to your fridge door. But two fridge doors will not magnetically attract.
Paramagnetism, fields align
300
You bring X near Z but not touching, cut grounding cord. Then touch Y to Z. What are the signs of the final charges on X,Y,Z?
-,+,+
300
A charge of 6.83x10-8C is pushed with 4.21x103N by a charge that is 5.72x106m away. What is the charge on the other charge?
2.24x1014C
300
A charge is being pushed with a force of 40N. If the distance between the charges were cut in half, and both charges were doubled, what's the new force?
640N
300
Which would take more work. Moving a + charge from A to B or from B to A?
B to A
300
The magnetic nouth pole of the Earth is in which area of the globe?
Antarctica
400
You bring X near Z, cut cord, then put X back. Which way does Z exert a force on Y afterward?
Left
400
A charge is being pulled with an electric force of 200N. If the distance between the charges is doubled, and one of the charges is tripled, what is the new force?
150N
400
What is the direction of the net force on X?
Right
400
If you were to double the charge and quadruple the mass, would the charge be more likely to hit A or B?
B
400
What does MRI stand for?
Magnetic resonance imaging
500
How could you touch these spheres together so that the final charges would be +3Q, +4Q, +3Q?
X to Z, Y to Z, X to Z
500
A charge of 3.15x10-5C is pulled with 60N by a charge of -7.96x10-2C. How far apart are the charges?
19.4m
500
What is the direction of the electric force on charge Z?
left
500
Rank the charges. + is > than -
DCABE
500
Explain how a frog can get levitated by a magnetic field?
Water is diamagnetic, water magnetic field aligns opposite to external magnetic field