Internal Energy

Mr. Anderson explains internal energy using an egg as an example, highlighting the difference between object and system models. He discusses mass spring oscillators, simple pendulums, and electric fields, emphasizing energy conservation and the importance of understanding system dynamics.

What causes the egg to spin even after the outside is stopped?

• The egg's shape

• Internal changes within the egg

• External forces acting on the egg

• The egg's color

When can an object be treated as a system?

• When it is moving at a constant speed

• When it is stationary

• When forces acting on it are changing

• When it is in a vacuum

What happens to the period of a mass spring oscillator if the mass increases?

• The period decreases

• The period increases

• The period remains the same

• The period becomes zero

Which factor does NOT affect the period of a simple pendulum?

• Length of the pendulum

• Gravitational field strength

• Air resistance

• Mass of the bob

How does the gravitational field strength affect a pendulum's period?

• Stronger field stops the pendulum

• Stronger field decreases the period

• Stronger field increases the period

• Field strength has no effect

What indicates the presence of an electric field in a system?

• A charge changes color

• A charge moves away

• A charge remains stationary

• A charge disappears

What law can be used to calculate the force between two charges?

• Newton's Law

• Coulomb's Law

• Ohm's Law

• Hooke's Law