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:
.
Answer:
The correct answer is intensity.
Explanation:
The principle of overload is a basic sports fitness training concept which means that in order to improve, athletes must continually work harder as they their bodies adjust to existing workouts. Thus, overloading also plays a role in skill learning.
Now, since erhen wants to increase his mile run from eight to six minutes by run some sandy hills near his home, it means the principle at work is making his training runs more intense for better speed results. Thus the principle at work is intensity because he is trying to do something that makes him run faster.
Answer:
Having a bigger angle above the horizontal
Explanation:
Applying the energy conservation theorem:
The kinetic energy is reduced because of the work done by the friction force.
The friction force is given by:
so the friction force depends on the Normal force, because the slide has an angle the normal force is given by:
So when the angle of the slide is bigger, the friction force decreases, for example:
for 45 degrees:
for 75 degrees:
as you can see if the angle is bigger above the horizontal, the friction force is reduced and so the work done by that force. We didn't have to change the height of the slide, so the potential gravitational energy remains the same.
I’d say a negative charge cause opposites attract but I’m not sure
