what depends if the universe is expanding or not

H, (see Hubble's Law)

HZ

Related Physics A Level answers

All answers ▸

State what is meant by a Doppler shift and describe how it was used to study the movement of galaxies.


What is the Strong Nuclear Force?


A spacecraft called Deep Space 1, mass 486 kg, uses an “ion-drive” engine which expels 0.13 kg of xenon propellant each day at 30kms^-1. What is the initial increase in speed of the spacecraft


A golf ball is hit at angle θ to the horizontal, with initial velocity u. Stating an assumption, show that the horizontal distance travelled by the ball is directly proportional to u^2.