A 0.111 kg hockey puck moving at 55 m/s is caught by a 80 kg goalie at rest. With what speed does the goalie slide on the (frict
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Answer:
Explanation:
first write the newtons second law:
F=δma
Applying bernoulli,s equation as follows:
∑
Where, is the pressure change across the streamline and
is the fluid particle velocity
substitute for {tex]γ[/tex] and
for
integrating the above equation using limits 1 and 2.
there the bernoulli equation for this flow is
note: =density(ρ) in some parts and change(δ) in other parts of this equation. it just doesn't show up as that in formular
It is required an infinite work. The additional electron will never reach the origin.
In fact, assuming the additional electron is coming from the positive direction, as it approaches x=+1.00 m it will become closer and closer to the electron located at x=+1.00 m. However, the electrostatic force between the two electrons (which is repulsive) will become infinite when the second electron reaches x=+1.00 m, because the distance d between the two electrons is zero:
So, in order for the additional electron to cross this point, it is required an infinite amount of work, which is impossible.
In fact, assuming the additional electron is coming from the positive direction, as it approaches x=+1.00 m it will become closer and closer to the electron located at x=+1.00 m. However, the electrostatic force between the two electrons (which is repulsive) will become infinite when the second electron reaches x=+1.00 m, because the distance d between the two electrons is zero:
So, in order for the additional electron to cross this point, it is required an infinite amount of work, which is impossible.