Year 12 Physics Notes Review

These flashcards are designed to help review key concepts from the Year 12 Physics notes.

What is the purpose of Vernier calipers?

To measure small distances such as inside and outside diameters of circular objects.

What is the resolution of a Vernier caliper?

The smallest measurement on the main scale is 0.1 cm or 1 mm, and the Vernier scale can read to 0.05 mm.

What is the formula for the absolute uncertainty of a reading?

Absolute uncertainty = range of values in which the true value lies.

What is the key concept of significant figures in measurements?

All non-zero numbers are significant, any zeros between non-zero numbers are significant, and trailing zeros after a decimal are significant.

How is momentum defined in physics?

Momentum is the product of mass and velocity, given by p = mv.

What happens to an object in a state of equilibrium?

The sum of all forces acting on the object equals zero, resulting in no net acceleration.

What is the formula for calculating work done in physics?

Work done = Force x Distance.

What is the relationship between power, work, and time?

Power is the amount of work done per unit time, represented as P = W/t.

Define Coulomb's Law in electrostatics.

The force between two charged objects is proportional to the product of the charges and inversely proportional to the square of the distance between them.

What does an electric field represent?

An area around a charged object where it exerts force on other charges.

What is Lenz's Law?

The polarity of induced emf is such that it opposes the change in magnetic flux that produced it.

What characterizes the motion of a charged particle in a magnetic field?

The charged particle experiences a force perpendicular to its velocity and the magnetic field, causing it to move in a circular path.

What is the photoelectric effect?

The phenomenon where electrons are emitted from a material when it absorbs light of sufficient energy.