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denis23 [38]
3 years ago
9

What are the change in internal energy if 250 j of hear is added to a system of 80 j of work is done by the system

Physics
1 answer:
Sphinxa [80]3 years ago
5 0

Answer:

Explanation:

dU= dq+w

dU is change in internal energy of the system

dq is the amount heat added or released by the system which be positive or negative respectivelý

And w is the amount of work done by the system or on the system which will be positive or negative respectively.

Hence,

dU= 250+80= 330 J

The change will be positive

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Answer:

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7 0
3 years ago
A 6.00-μf parallel-plate capacitor has charges of 40.0 μc on its plates. how much potential energy is stored in this capacitor?
dedylja [7]

Thew energy stored in a capacitor of capacitance C and voltage between the plates V is

E=\frac{1}{2} CV^2=\frac{1}{2C} Q^2.

Substituting numerical value

E=\frac{1}{2*6*10^{-6}} (40*10^{-6})^2\\ E=133.33\; \mu J

7 0
3 years ago
A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is
Tpy6a [65]

Answer:

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Explanation:

<h3><u>Given :</u></h3>

  • Force applied = 100 N
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<h3><u>To find :</u></h3>

Power

<h3><u>Solution :</u></h3>

For calculating power, we first need to know about the work done.

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Hence, power = 50 W .

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3 years ago
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The answer you’re looking for is
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4 0
3 years ago
Read 2 more answers
If you need 40.0 Nm of torque in order to loosen a nut on a wn
KonstantinChe [14]

Answer:

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Explanation:

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r = 0.301 m

The mechanic must apply the force 0.301 m from the nut.

6 0
3 years ago
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