Podcast
Questions and Answers
What is the term used for force per unit area?
What is the term used for force per unit area?
- Magnetic force
- Atmospheric pressure (correct)
- Contact force
- Gravitational force
Which force can act on an object with or without being in contact with it?
Which force can act on an object with or without being in contact with it?
- Muscular force
- Non-contact force (correct)
- Gravitational force
- Electrostatic force
What type of change in motion implies a change in the state of motion of an object?
What type of change in motion implies a change in the state of motion of an object?
- Change in speed, direction, or both (correct)
- Change in speed only
- Change in direction only
- No change in speed or direction
What kind of force is exerted by air around us and is known as atmospheric pressure?
What kind of force is exerted by air around us and is known as atmospheric pressure?
Which force is responsible for exerting pressure on the walls of containers by liquids and gases?
Which force is responsible for exerting pressure on the walls of containers by liquids and gases?
Which term describes a force that has both magnitude and direction?
Which term describes a force that has both magnitude and direction?
What is the force that causes objects to fall towards the earth?
What is the force that causes objects to fall towards the earth?
When two pieces of straw rubbed with paper are brought near each other, what force is observed between them?
When two pieces of straw rubbed with paper are brought near each other, what force is observed between them?
Why does water flow downward in rivers according to the text?
Why does water flow downward in rivers according to the text?
If a magnet is brought near another magnet placed on rollers, what will most likely happen?
If a magnet is brought near another magnet placed on rollers, what will most likely happen?
What is the term used for a straw that has acquired electrostatic charge?
What is the term used for a straw that has acquired electrostatic charge?
Why do objects fall towards the earth according to the text?
Why do objects fall towards the earth according to the text?
Why are we not crushed under the weight of the atmosphere?
Why are we not crushed under the weight of the atmosphere?
Why does a rubber sucker stick to a surface when pressed?
Why does a rubber sucker stick to a surface when pressed?
What did Otto von Guericke demonstrate with his air pump experiment involving metallic hemispheres?
What did Otto von Guericke demonstrate with his air pump experiment involving metallic hemispheres?
What would happen if there were no air between the rubber sucker and the surface?
What would happen if there were no air between the rubber sucker and the surface?
How did Otto von Guericke demonstrate the force of air pressure on metallic hemispheres?
How did Otto von Guericke demonstrate the force of air pressure on metallic hemispheres?
What does the weight of air in a column of the height of the atmosphere represent?
What does the weight of air in a column of the height of the atmosphere represent?
