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3 years ago

Which of the following does not have a global cycle?

Physics

2 answers:

Darya [45]3 years ago

8 0

The answer is c hope it helps

Musya8 [376]3 years ago

3 0

It's Iron, I believe.

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1. Which is an example of chemical potential

balu736 [363]

Answer:

Explanation:

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3 years ago

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Two kilograms of air is contained in a rigid wellinsulated tank with a volume of 0.6 m3 . The tank is fitted with a paddle wheel

wolverine [178]

Answer:

$0.3\ \text{m}^3/\text{kg}$

$36\ \text{kJ}$

$18\ \text{kJ/kg}$

Explanation:

V = Volume of air = $0.6\ \text{m}^3$

P = Power = 10 W

t = Time = 1 hour

m = Mass of air = 2 kg

Specific volume is given by

$v=\dfrac{V}{m}\\\Rightarrow v=\dfrac{0.6}{2}\\\Rightarrow v=0.3\ \text{m}^3/\text{kg}$

The specific volume at the final state is $0.3\ \text{m}^3/\text{kg}$

Work done is given by

$W=Pt\\\Rightarrow W=10\times 60\times 60\\\Rightarrow W=36000\ \text{J}=36\ \text{kJ}$

The energy transfer by work, is $36\ \text{kJ}$

Change in specific internal energy is given by

$\Delta u=\dfrac{Q}{m}+\dfrac{W}{m}\\\Rightarrow \Delta u=0+\dfrac{36}{2}\\\Rightarrow \Delta u=18\ \text{kJ/kg}$

The change in specific internal energy of the air is $18\ \text{kJ/kg}$

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3 years ago

What are distillation and evaporation most often used to separate in a science lab and why?

Alex777 [14]

C because I think that’s the answer

3 0

2 years ago

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At time t = 0 a car has a velocity of 16 m/s. It slows down with an acceleration given by

Leni [432]

Answer:

Explanation:

We know the inital velocity is 16 m/s

Acclereation is -0.5 m/s^2

And that final velocity is 0

We need to find time

$v _{f} = v _{i} + at$

$0 = 16 + ( - 0.5)t$

$- 16 = - 0.5t$

$32 = t$

The answer is B

7 0

2 years ago

Transfer of heat through flowing material evaporation radiation convection condensation

Lorico [155]

The answer is convection. There are three main types of heat transfer: conduction, convection, and radiation. Among the three, convection is the one that involves heat transfer through a flowing material or medium. Conduction involves the direct contact between two surfaces at different temperatures, while radiation involves heat transfer through electromagnetic waves.

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3 years ago