Density as you should know is equal to mass/volume. Solve for the volume.
Now, you know that you are dealing with a sphere. You know the volume of a sphere is V= 4/3pi r ^3.
You know the volume so just solve for r
Answer:
it's a double displacement reaction
Explanation:
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<span>Deuterium itself is not on the periodic table, but it is known as a heavy hydrogen which is on the table. The nucleus of deuterium is called deuteron and has a neutron in it while most commonly protium has no neutrons in its nucleus. Deuterium is one of two different stable isotopes of hydrogen. I'm not entirely sure on what answer you needed, but I hope this helped:)
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<h3>
Answer:</h3>
60 %
<h3>
Explanation:</h3>
We are given ;
- Work input as 5000 Joules
- Work output as 3000 Joules
We are required to calculate the efficiency of the machine;
What is efficiency?
- Efficiency is the ratio of work output to inputs expressed as a percentage.
Efficiency = (work output ÷ work input) × 100
= (3000 J ÷ 5000 J) × 100
= 60 %
Thus, the efficiency of the machine is 60%.