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Paraphin [41]
3 years ago
8

In a closed system, change in internal energy is 10 J and heat transferred to it is 10 J what is the work done by the system

Physics
1 answer:
kolbaska11 [484]3 years ago
6 0

Given :

Change in internal energy is, ΔE = 10 J.

Heat transferred to the system is, Q = 10 J.

To Find :

The work done by the system.

Solution :

We know, by 1st law of thermodynamics :

ΔE = W + Q

W = ΔE - Q

W = 10 - 10 J

W = 0 J

Therefore, work done by the system is 0 J.

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Answer:

2.7s

Explanation:

The solution of time required is shown below:-

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Now, the

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Therefore, the time required to maintain will be Equal to time (t) constant that is 2.7s

So, the correct answer is 2.7s

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A physical change is a change to the physical properties of a substance. This type of change does
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False

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The maximum wavelength that an electromagnetic wave can have and still eject electrons from a metal surface is 459 nm. What is t
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Explanation:

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Work function is given by

W_0=\frac{hc}{\lambda_0}\\\Rightarrow W_0=\frac{6.626\times 10^{-34}\times 3\times 10^8}{459\times 10^{-9}}\\\Rightarrow W_0=4.33072\times 10^{-19}\ J

Converting to eV

1\ J=\frac{1}{1.6\times 10^{-19}}\ eV

4.33072\times 10^{-19}\ J=4.33072\times 10^{-19}\times \frac{1}{1.6\times 10^{-19}}\ eV=2.7067\ eV

The work function W0 of this metal is 2.7067 eV

4 0
3 years ago
an Olympic runner leaps over a hurdle.if the runner initial vertical speed is 2.2m/s how much will the runners center of mass be
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The intensity of a sound wave at a fixed distance from a speaker vibrating at 1.00 kHz is 0.600 W/m2.
LenKa [72]

Answer:

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Explanation:

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