Podcast
Questions and Answers
What two conditions must be satisfied for work to be done on an object?
What two conditions must be satisfied for work to be done on an object?
- A force is applied, and the object stays still.
- Energy is transferred, and heat is produced.
- No force is applied, and the object is in motion.
- A force acts on the object, and the object is displaced. (correct)
What is the scientific definition of work?
What is the scientific definition of work?
- A scalar product of energy and distance.
- The product of force and displacement when the force acts in the direction of displacement. (correct)
- A force times the mass of the object.
- The product of force and displacement when the force acts perpendicular to the displacement.
If a force of 7 N is applied to an object but the displacement is perpendicular to the force, what is the work done?
If a force of 7 N is applied to an object but the displacement is perpendicular to the force, what is the work done?
- 5 Nm
- 0 Nm (correct)
- 7 Nm
- 14 Nm
What unit is used to measure work?
What unit is used to measure work?
Which statement about work is true?
Which statement about work is true?
Which scenario represents a situation where no work is done scientifically?
Which scenario represents a situation where no work is done scientifically?
What element is crucial for work to be done in a scientific context?
What element is crucial for work to be done in a scientific context?
Which of the following activities is considered work scientifically?
Which of the following activities is considered work scientifically?
Why might Kamali feel like she is working hard, yet doing little scientific work?
Why might Kamali feel like she is working hard, yet doing little scientific work?
Flashcards
Scientific Work
Scientific Work
Work is done when a force causes an object to move. A change in position, called displacement, is necessary.
No Work Example
No Work Example
Pushing a stationary rock, standing with a heavy load, or studying hard, these actions may not involve any scientific work (due to no displacement).
Displacement
Displacement
A change in the object's position.
Work (Science vs. Everyday)
Work (Science vs. Everyday)
Signup and view all the flashcards
Climbing a Tree/Stairs
Climbing a Tree/Stairs
Signup and view all the flashcards
Work (science)
Work (science)
Signup and view all the flashcards
Work formula
Work formula
Signup and view all the flashcards
Work unit
Work unit
Signup and view all the flashcards
Zero work
Zero work
Signup and view all the flashcards
Work - conditions
Work - conditions
Signup and view all the flashcards
