although electromagnetic waves differ in the wavelengths they all travel at the speed of light which is
A.300,00km/s
B.6000km/h
c.100km/s
d.10,00km/s
A rocket is a motor that can urn fuel without requiring
A.water
B.air
c.electricity
d.fire
I meant burn
and what are your answers?
1.A
2.B
For the first question, we need to know the speed at which electromagnetic waves travel. Since the question states that all electromagnetic waves travel at the speed of light, we can conclude that the correct answer is the speed of light. To determine the speed of light, we can refer to scientific knowledge.
The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s). Therefore, the correct answer to the first question is A. 300,000 km/s.
Now for the second question, we are asked about a rocket's fuel requirements. We need to determine which option correctly states what a rocket does not require to burn fuel. To find the answer, we should have some general knowledge about rockets.
A rocket is a vehicle that can propel itself by expelling exhaust gases through a process called combustion. Combustion is a chemical reaction that occurs when a fuel reacts with an oxidizer, typically in the presence of heat or fire.
Based on this information, we can see that rockets do not require fire to burn fuel. Thus, the correct answer to the second question is D. fire.