Answer:
3.1×10⁻¹¹ N
Explanation:
Use Coulomb's law:
F = k q₁ q₂ / r²
F = (9×10⁹) (6.0×10⁻¹⁰) (2.3×10⁻¹⁵) / (0.02 m)²
F = 3.1×10⁻¹¹
Internal energy, U, is equal to the work done or by the system, plus the heat of the system:
<span>ΔU=q+w
</span>in the question they tell you the work done by the system, and the internal energy:
8185 J= -346 J + q work is negative because it was done BY the system.
substitute in: <span>q=m∗Cp∗ΔT</span> and solve for <span>Cp</span><span>.
</span>
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remember that <span>ΔT=<span>Tf</span>−<span>Ti
</span></span>
so the equation, really, is: <span>q=m∗Cp∗(<span>Tf</span>−<span>Ti</span>)</span><span>
------------------------------------------
</span>
<span>185J=−346J+[m∗Cp∗(<span>Tf</span>−<span>Ti</span>)]
</span>plug in the rest of your values and solve for <span><span>Cp</span></span>
Answer:
karhgjgngkjjgbcnhbhbnfnbhkjd jhdjsgg
Answer:
10 km/s^2
Explanation:
Acceleration = velocity/time
a= 70km/7s
= 10km/s^2
There are two kinds of electrical charge.
We call them 'positive' and 'negative' ... I guess nobody ever thought of better names.
One basic law of electric charges is:
Two of the same kind of charge repel each other.
One of each kind of charge attract each other.
Electrons all carry a negative charge.
So two electrons carry the SAME kind of charge, and so repel each other.
