what depends if the universe is expanding or not

H, (see Hubble's Law)

HZ

Related Physics A Level answers

All answers ▸

A man weighing 600N steps on a scale that contains a spring. The spring is compressed 1cm under their weight. Find the force constant of the spring and total work done on its compression.


Why is the refractive index of water bigger than that of air?


Describe and explain how a constant rate of fission is maintained in a reactor by considering what events or sequence of events may happen to the released neutrons. (6 marks)


Determine an approximate value for the acceleration of free fall using a tennis ball, metre ruler and a stopwatch.