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irinina [24]
3 years ago
7

E= (500.0lm) 4 (100)

Physics
1 answer:
drek231 [11]3 years ago
7 0

Answer:

didn't understand your question

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Predict Two objects have unlike charges. How
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Explanation:

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First law of equilibrium
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For an object to be an equilibrium it must be experiencing no acceleration.

Explanation:

Hope it helps.

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3 years ago
When it comes to how ray lines are drawn, what makes the convex lens and concave mirror similar to each other?
Advocard [28]

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Convex lens and convex mirrors are similar that

1. They have the same image characteristics at various object positions

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4 0
3 years ago
An experimenter adds 970 J of heat to 1.75 mol of an ideal gas to heat it from 10.0∘C to 25.0∘C at constant pressure. The gas do
ipn [44]

Answer:

(a) ΔU=747J

(b) γ=1.3

Explanation:

For (a) change in internal energy

According to first law of thermodynamics the change in internal energy is given as

ΔU=Q-W

Substitute the given values

ΔU=970J-223J

ΔU=747J

For(b) γ for the gas.

We can calculate γ by ratio of heat capacities of the gas

γ=Cp/Cv

Where Cp is the molar heat capacity at constant pressure

Cv is the molar heat capacity at constant volume

To calculate γ we first need to find Cp and Cv

So

For Cp

As we know

Q=nCpΔT

Cp=(Q/nΔT)

C_{p}=\frac{970J}{1.75mol*(25^{o}C-10^{o}C )}\\C_{p}=37J/mol.K

From relation of Cv and Cp we know that

Cp=Cv+R

Where R is gas constant equals to 8.314J/mol.K

So

C_{v}=C_{p}-R\\C_{v}=37-8.314\\C_{v}=28.687J/mol.K\\

So

γ=Cp/Cv

γ=[(37J/mol.K) / (28.687J/mol.K)]

γ=1.3

4 0
3 years ago
HURRY!!!!
Bingel [31]
I'm not exactly sure but I'm thinking that it's the last one. Sorry if I'm wrong
4 0
3 years ago
Read 2 more answers
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