The value 100 MW is equivalent to (a) 100×10^6 w (b) 100 x 10^-6 w (c) 100 x 10^-3 w (d) 100 x 10^3 w
1 answer:
Answer:
(a) 100×10⁶ W
Explanation:
Power is defined as the rate of doing work. Thus,
<u>The S.I. unit of Power is watt which is J/s.</u>
Mega is a unit prefix which denotes a factor of 1 million (10⁶). It is denoted by 'M'.
Thus,
<u>1 MW=10⁶ W</u>
The Conversion of 100 MW into W is shown below:
<u>100 MW = 100×10⁶ W</u>
The option that correct resembles is option (a)
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Answer:
The hydrostatic force of 313920 N is acted on each wall of the swimming pool and this force is acted at 1 m from the ground. The hydrostatic force is quadruple if the height of the walls is doubled.
<u>Explanation:</u>
To calculate force on the walls of swimming pool whose dimensions are given as <em>8-m-long, 8-m-wide, and 2-m-high</em>. We know that formula for hydrostatic force is
, we know ρ=density of fluid=1000
,
g=acceleration due to gravity=9.81 , h=height of the pool=2 m and l=length of the pool=8 m.
hydrostatic force on each wall= = 313920 N.
<em>The distance at which hydrostatic force is acted is half of the height of the swimming pool. </em>
At 1 m from the ground this hydrostatic force is acted on each wall.
The force is <em>quadruple if the height of the walls of the pool is doubled</em> this is because, the<em> height is doubled and taken as h=4 m</em> and substitute in the equation =
=
= 1255680 N. This is 4 times 313920 N.