Speed = distance travelled / change in time
speed = 156km / 1.5 hours
speed = 104km/hour
Answer:
Fuel cells convert energy from a fuel (usually hydrogen) into electricity, and advances in technology are bringing down costs. Fuel cells can use hydrogen produced from renewable electricity sources or be powered by other fuels, such as natural gas.
Explanation:
I think its ion magnets correct me if I'm wrong
What is the question as you are just telling us a fact
Answer:
d. perfectly elastic
Explanation:
According to the kinetic theory for collisions of gas molecules:
1.The loss of energy is negligible or we can say that it is zero.
2.Molecules of the gas move in a random manner.
3.The collision between molecules and with the wall of the container is perfectly elastic.That is why loss in the energy is zero.
Therefore the correct answer will be d.
d. perfectly elastic