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I am Lyosha [343]

4 years ago

11

An electron moving through an electric field experiences an acceleration of 6.2 ✕ 103 m/s2. (a) find the electric force acting o

n the electron.

1 answer:

fenix001 [56]4 years ago

7 0

Force = mass × acceleration
mass of an electron =9.1×10^-31 kg
given acceleration...

find force

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Alexxx [7]

It is b i had that qustion

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3 years ago

How and why does the distance between 2 electrodes affect the rate of electrolysis? ...?

Rasek [7]

<span>Nothing, in terms of the chemistry.

The distance between the electrodes affects the electrical resistance very slightly. Increasing the distance increases the resistance and reduces the current slightly, which reduces slightly the amount of product.

For most practical applications, for electrolysis done in a beaker, varying the distance between the electrodes will make little difference.

Increasing the concentration of the electrolyte will increase the current flow because there are more charged particles to carry charge, and increase the product yield.</span>

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3 years ago

What average force is needed to accelerate a 7.00-gram pellet from rest to 155 m/s over a distance of 0.600 m along the barrel o

leonid [27]

Answer: The force needed is 140.22 Newtons.

Explanation:

The key assumption in this problem is that the acceleration is constant along the path of the barrel bringing the pellet from velocity 0 to 155 m/s. This means the velocity is linearly increasing in time.

The force exerted on the pellet is

F = m a

In order to calculate the acceleration, given the displacement d,

$d = \frac{1}{2}at^2\implies a=\frac{2d}{t^2}$

we will need to determine the time t it took for the pellet to make the distance through the barrel of 0.6m. That time can be determined using the average velocity of the pellet while traveling through the barrel. Since the velocity is a linear function of time, as mentioned above, the average is easy to calculate as:

$\overline{v}=\frac{1}{2}(v_{end}-v_{start})=\frac{1}{2}(155-0)\frac{m}{s}=77.5\frac{m}{s}$

This value can be used to determine the time for the pellet through the barrel:

$t = \frac{d}{\overline{v}}=\frac{0.6m}{77.5\frac{m}{s}}\approx0.00774s$

Finally, we can use the above to calculate the force:

$F = ma = m\frac{2d}{t^2} = 0.007kg\cdot \frac{2\cdot 0.6 m}{0.00774^2 s^2}\approx 140.22N$

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3 years ago

Karolina [17]

<h2>Carry energy</h2>

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Hope this helped :)

~pinetree

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2 years ago

Gold is used to make a super thin layer on the visors of astronauts' helmets because of which property in particular?

8090 [49]

B, because gold is the most malleable substance of all.

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3 years ago

Read 2 more answers