Explanation:
<em>i </em><em>don't </em><em>have </em><em>keyboard </em><em>of </em><em>mathametics </em><em>so </em><em>i </em><em>solve </em><em>this</em>
Answer:
<h2>a) 2.5 s</h2><h2>b) 1.55 m</h2><h2 />
Explanation:
<h3>Given :-</h3><h2>Completes 2 oscillation in 5s.</h2><h2>A) Time period = ?</h2><h2 /><h2>

</h2><h2 /><h2>

</h2>
<em>Thus 1 oscillation is completed in 2.5 </em><em>s.</em>
<h2>B) If g = 9.8 ms−², find its length.</h2><h2>

</h2><h3>= 2.5s </h3><h3>

</h3><h3>Length = ? </h3><h2>

</h2><h3 /><h3>

</h3>
Thus the length of g = 9.8 ms −² = 1.55m
<h2>
Hope it helps u.......</h2><h2>
STAY SAFE, STAY HEALTHY AND BLESSED .</h2><h2>
HAVE A MARVELOUS DAY AHEAD !</h2><h2>
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Explanation:
time taken fir 50 oscillations is 6 seconds
time taken for 1 oscillation is 6/50
convert it into a decimal
Answer:
r=15.53 nm

Explanation:
Lets take electron is in between iron and uranium
Charge on electron
Charge on iron
Charge on uranium
We know that force between two charge

For equilibrium force between electron and iron should be force between electron and uranium
Lets take distance between electron and uranium is r so distance between electron and iron will be 37.5-r nm
Now by balancing the force

So r=15.53 nm
So force

Answer : First of all, to harness the solar energy and utilize it for the decomposition of water to make hydrogen fuel cell seems to be easy but practically it has many hurdles in its way. It might not work well, when the days would not be sunny. Also, the production of hydrogen fuel would require decomposing water which may need a high energy of activation, which would be more than the energy that will be produced from the fuel cell.