what depends if the universe is expanding or not

H, (see Hubble's Law)

HZ

Related Physics A Level answers

All answers ▸

What is the photoelectric effect and how does it provide evidence for the quantisation of electromagnetic radiation?


why is gravitational potential negative?


Find current and voltage across resistors R1 and R2, when they connected in parallel and in series. A 12V battery is connected, R1=4Ω and R2=3Ω.


The energy of a photon is 1.5MeV. Calculate the frequency associated with this photon energy and state an appropriate unit in your answer.