A system that can be affected by the outside environment, by an exchange of matter or energy is ______.
1 answer:
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<u><em>Emission current = 0.035 A</em></u>
This question falls under the topic of thermionic emission.
We are given;
Surface Area; a = 0.157 cm² = 0.157 × 10⁻⁴ m²
Temperature; T = 110 K
Area; A = 100 A/m²/k²
Work function; Φ = 1.04 eV
Formula for emission current density is;
J = AT²
where b is a constant = 665Φ
Plugging in the relevant values to get;
J = 100 × 110² ×
J = 2250.3886 amp/m²
Formula for emission current is;
Emission Current = J × a
Emission current = 2250.3886 × 0.157 × 10⁻⁴
<em>Emission current = 0.035 A</em>
Read more at; brainly.in/question/7086684
The correct answer is:
<span>The rate at which a waves energy flows through a given unit of area
In fact, light intensity is defined as the light power per unit of area:
</span>
<span>but the power is the energy carried by the light per unit of time:
</span>
<span>this means that the intensity can be rewritten as
</span>
<span>
So, it's basically the rate of energy (per unit of time) through a given surface.</span>
<span>The rate at which a waves energy flows through a given unit of area
In fact, light intensity is defined as the light power per unit of area:
</span>
<span>but the power is the energy carried by the light per unit of time:
</span>
<span>this means that the intensity can be rewritten as
</span>
So, it's basically the rate of energy (per unit of time) through a given surface.</span>
Answer:
1600 N
Explanation:
pascals principle says..
so lets do
so multiply one half (2/4 simplified) by 3200
1600 is equal to x
1600 N
YAAAAAAAAAAAAAAY