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EnglandPhysics

Thermodynamics, space and oscillations

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

How do we measure stars and the expanding universe?

Stellar luminosity and Wien's law and Stefan's law, the use of standard candles and parallax for distance, the redshift of galaxies, and Hubble's law and the expanding universe.
A focused answer to the Edexcel 9PH0 astrophysics content, covering stellar luminosity with Wien's and Stefan's laws, parallax and standard candles for distance, the redshift of galaxies, and Hubble's law and the expanding universe.
12 min answer →

What keeps an object moving in a circle?

Angular velocity and the relationship between linear and angular speed, centripetal acceleration, and centripetal force in horizontal and vertical circular motion.
A focused answer to the Edexcel 9PH0 circular motion content, covering angular velocity, the link between linear and angular speed, centripetal acceleration, and centripetal force in horizontal and vertical circles.
10 min answer →

What defines simple harmonic motion and how does it lose or gain energy?

The defining condition for simple harmonic motion, displacement, velocity and acceleration in SHM, energy interchange in an oscillator, and free, damped and forced oscillations with resonance.
A focused answer to the Edexcel 9PH0 SHM content, covering the defining condition, displacement, velocity and acceleration, energy interchange in an oscillator, and free, damped and forced oscillations with resonance.
12 min answer →

How is heat transferred and how do ideal gases behave?

Internal energy and temperature, specific heat capacity and specific latent heat, the ideal gas laws and equation of state, and the kinetic theory of gases.
A focused answer to the Edexcel 9PH0 thermal physics content, covering internal energy and temperature, specific heat capacity and latent heat, the ideal gas laws and equation of state, and the kinetic theory of gases.
12 min answer →