Nuclear fusion, converts hydrogen atoms into helium
Answer:
D
Explanation:
Option A, B and C are true about energy conversion devices, only option D is NOT true about energy conversion devices.
Answer:
3
Explanation:
the answer is number three
Answer:
The value is 
Explanation:
From the question we are told that
The height of the water is 
The density of oil is 
The height of oil is 
Given that both arms of the tube are open then the pressure on both side is the same
So

=> Here

where
is the density of water with value 
and
is the atmospheric pressure
and

=> 
=> 
=> 
=> 
The difference in height is evaluated as


I believe you've answered them correctly :)
Good luck with your quiz!