What is the main topic discussed in the video?

Principles of Moments and Magnetism

Interactive Video
•
Physics, Mathematics, Science
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The principles of electricity
The laws of thermodynamics
The turning effect of force
The effect of gravity on objects
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What principle is used to solve the problem in the video?
Principle of electromagnetism
Principle of moments
Principle of relativity
Principle of conservation of energy
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
According to the principle of moments, what must be true at equilibrium?
The sum of all forces is zero
The sum of clockwise moments equals the sum of anti-clockwise moments
The sum of kinetic energy is constant
The sum of potential energy is constant
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the calculated magnetic force between Q and P?
25 Newtons
20 Newtons
15 Newtons
10 Newtons
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the magnetic force between Q and P determined?
By measuring the distance between Q and P
By using the principle of moments
By calculating the gravitational force
By using the principle of conservation of energy
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the positive magnetic force calculated?
It indicates a neutral force
It indicates no force
It indicates an attractive force
It indicates a repulsive force
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the lower end of Q is a North Pole, what is the polarity of the end of P facing Q?
North
South
East
West
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