Physics Paper 1 Quick Revision Notes

Flashcards based on key physics concepts in the revision notes.

What is the SI unit for length?

Metre (m).

What does Archimedes' principle state?

A body immersed in a fluid experiences an upthrust equal to the weight of the fluid displaced.

What is Hooke's Law?

The extension of a spring is directly proportional to the applied force, as long as the elastic limit is not exceeded.

What is the formula for pressure in fluids?

Pressure (P) = Force (F) / Area (A).

What is the SI unit of pressure?

Pascal (Pa) or N/m².

What is the relationship in Boyle's Law?

At constant temperature, the pressure of a fixed mass of gas is inversely proportional to its volume.

What is the equation for Charles's Law?

At constant pressure, the volume of a gas is directly proportional to its absolute temperature.

Define centripetal force.

The force required to keep an object moving in a circular path, directed towards the center of the circle.

What is the formula for centripetal acceleration?

a = v² / r, where v is the linear velocity and r is the radius.

What is the principle of conservation of linear momentum?

The total momentum of a closed system remains constant if no external forces act on it.

What is specific heat capacity?

The amount of heat required to raise the temperature of 1 kg of a substance by 1 K.

What is the formula for kinetic energy?

K.E. = 1/2 mv², where m is mass and v is velocity.

How is work done calculated?

Work = Force x Distance in the direction of the force.

What is the relationship between torque and moment of a force?

Torque is the product of force and the perpendicular distance from the pivot to the line of action of the force.

What does Pascal's principle state?

Pressure exerted on an enclosed fluid is transmitted undiminished to all parts of the fluid.

What is the definition of thermal expansion?

The increase in volume of a substance due to an increase in temperature.

What does Newton's first law of motion state?

An object at rest stays at rest and an object in motion stays in motion unless acted upon by an external force.

How does density affect buoyancy?

An object will float in a fluid if its density is less than that of the fluid.

What is the relationship between energy and work?

Work done on an object results in a change in energy of that object.

What is the equation for gravitational potential energy?

P.E. = mgh, where m is mass, g is gravitational acceleration, and h is height.

How do you calculate the efficiency of a machine?

Efficiency = (Useful Work Output / Total Work Input) x 100%.