Mechanical Wave cannot travel in space vaccumes, which would be considered "Empty Space" in your situation.
Answer:

Given:
Input Power (
)= 1000 W
Mass (m) = 100 kg
Height (h) = 10 m
Time (t) = 16 s
To Find:
Efficiency of the motor
Explanation:










Efficiency of the motor = 62.5 %
The answer is a
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Answer:
(A) Force on the object will be 58.85 N
(B) Apparent weight will be equal to 57.21 N
Explanation:
We have given mass of Neptune m = 1026 kg
Radius R = 25000 Km
Time period = 16 hour
We know that 1 hour = 3600 sec
So 16 hour = 16×86400 = 57600 sec
Acceleration due to gravity at north pole of Neptune 
(A) Mass of the object m = 5.5 kg
So gravitational force on the object 
(B) Velocity will be equal to 
Apparent weight of the object will be equal to 

Government should continue to fund fusion energy research because:
- it potentially will produce large amounts of energy
- scientific research could discover more feasible methods of fusion energy production
- it is a very clean form of energy
<h3>What is fusion energy?</h3>
Fusion energy is the energy produced from fusion reactions.
Fusion reactions are a type of nuclear reaction in which small atomic nucleus are fused together to produce larger atomic nucleus with the release of large amounts of energy.
The Sun produces its energy from fusion reactions between hydrogen atoms to produce helium nucleus. This reaction takes place at very high temperatures.
It is important that the government continue to fund fusion energy research because:
- it potentially will produce large amounts of energy
- more scientific research could discover alternative cheaper methods of fusion
- it is a very clean form of energy
In conclusion, the continuous government funding will make it possible to finally discover cheaper and more feasible ways to produce fusion energy.
Learn more about fusion energy at: brainly.com/question/27761602
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