Answer: The correct answer is : From the period-luminosity relation for Cepheids, he was able to determine the distance to Andromeda and show that it was far outside the Milky Way Galaxy.
Explanation: Hubble's law says that the recession velocity of a galaxy is directly proportional to its distance from us. Hubble measured the distance to the Andromeda galaxy by applying the period-luminosity relationship to Cepheid.
Answer:
The kinetic energy of the car at the top of the hill is 140280 Joules.
Explanation:
Mass of the car, m = 620 kg
Speed of the car, v = 24 m/s
Height of the hill, h = 30 m
The engine can produce up to 144,000 J of work during that time, W = 144,000 J
We need to find the kinetic energy of the car at the top of the hill. It can be calculated using conservation of mechanical energy as :




So, the kinetic energy of the car at the top of the hill is 140280 Joules. Hence, this is the required solution.
Yes light dose transmission in oxygen
Answer it scapes away loose anf rough pieces of wood
Explanation:
The wavelength and frequency of the wave is altered, resulting in a change in the amount of energy carried.