Answer:
(a) Approximately
.
Explanation:
Let
denote the capacitance of a capacitor. Let
be the potential difference (voltage) between the two plates of this capacitor. The energy
stored in this capacitor would be:
.
Rearrange this equation to find an expression for the potential difference
in terms of capacitance
and energy
:
.

The capacitance
of this capacitor is given in nanofarads. Convert that unit to standard unit (farads):
.
Given that the energy stored in this capacitor is
, the potential difference across the capacitor plates would be:
.
It important to assess flexibility both before and during a workout regimen because to assess flexibility progress.
<h3>What is a flexibility exercise?</h3>
Flexibility exercises, as the name implies, help to increase the stretch of the muscles, improving the range of motion. More flexibility is also important to help prevent possible post-workout soreness.
In this case we have that the reason to continue doing stretching before and during the exercises is about to assess flexibility progress.
See more about flexibility at brainly.com/question/15395713
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Answer:
D. 18.60
Explanation:
By the law of conservation, the momentum is neither loss nor gained but instead transfered. When they crash into each other, and stick, they combine to create a total mass of 215 kg. Since the momentum is transfered, the two objects, combined, have a total momentum of 4000 kg-m/s. We know that momentum equals mass times velocity. You then divide 4000 by 215 and get approximately 18.6 m/s
The intensity on a screen 20 ft from the light will be 0.125-foot candles.
<h3>What is the distance?</h3>
Distance is a numerical representation of the length between two objects or locations.
The intensity I of light varies inversely as the square of the distance D from the source;
I∝(1/D²)
The ratio of the intensity of the two cases;

Hence, the intensity on a screen 20 ft from the light will be 0.125 foot-candles
To learn more about the distance refer to the link;
brainly.com/question/26711747
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Refraction
the fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.