In stars helium atoms are used with hydrogen atoms in order to produce energy.
Answer: A )
Answer:
hco3
Explanation: bc i said so
During a scientific study a hypotheses is generally modified or discarded
so for first blank the answer is hypotheses
Now in case of phlogiston theory it was assumed that when a substance catches fire it evolve certain substances known as phlogiston which was later on discarded as there is no such particle. Infact a substane undergoing oxidation may gain weight
Hence in second blank the answer is new evidence didn’t support it,
Answer:
wave speed
Explanation:
A wave is a disturbance that transmits energy from one place to another without the actual displacement of the particles of the medium.
To find the wave speed we need to determine the product of its frequency and wavelength.
Wave speed = Frequency x wavelength
Frequency of wave is the number of wave that passes through a point at a unit time.
Wavelength is the displacement of a complete wave train.
