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3 years ago

At the periphery of a hurricane the air is , and several kilometers above the surface, in the eye, the air is .

1 answer:

6 0

<span>At the periphery of a hurricane the air is sinking, and several kilometers above the surface, in the eye, the air is sinking. </span>

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Suppose 1.4 mol of an ideal gas is taken from a volume of 2.5 m3 to a volume of 1.0 m3 via an isothermal compression at 27°C. (a

zysi [14]

Answer:

Part a)

Q = 3198 J

Part b)

It is compression of gas so this is energy transferred to the gas

Explanation:

Part a)

Energy transfer during compression of gas is same as the work done on the gas

In isothermal process work done is given by the equation

$W = nRT ln(\frac{V_2}{V_1})$

now we know that

n = 1.4 moles

T = 27 degree C = 300 K

$V_2 = 2.5 m^3$

$V_1 = 1 m^3$

now we have

$W = (1.4)(8.31)(300)(ln\frac{2.5}{1})$

$Q = 3198 J$

Part b)

It is compression of gas so this is energy transferred to the gas

6 0

4 years ago

You are standing 30 m from a window that is 30 m off the ground. Your friend tries to toss you something, but only throws it str

pochemuha

Answer:

minimum initial velocity is 21.35 m/s

Explanation:

given data

distance S = 30 m

height h = 30 m

maximum acceleration a = 2 m/s²

to find out

minimum initial velocity that your friend could have thrown the object to enable you to catch

solution

first we get here time with the help of second equation of motion

time = $\sqrt{\frac{2h}{a} }$ ..................1

put her value we get

time = $\sqrt{\frac{2*30}{2} }$

time = 5.477 second

and that is time which tossed object must be take so we apply here again second equation of motion that is

-S = ut - 0.5 × gt² .......................2

-30 = u× 5.477 - 0.5 ×9.8×5.477²

solve it we get

u = 21.35 m/s

so minimum initial velocity is 21.35 m/s

3 0

3 years ago

Read 2 more answers

If Noah runs three laps around a 200 meter track in two minutes, what is the average speed of Noah in m/s?

devlian [24]

• 3 laps of 200 meter track = 600 meters
• 600 meters ran in 2 minutes
• 2 minutes = 120 seconds
• 600 meters / 120 seconds = 5 m/s on average

6 0

3 years ago

When an exothermic reaction releases thermal energy, this energy is usually_____.

saw5 [17]

Explanation:

A chemical reaction in which heat or energy is released is known as an exothermic reaction.

On the other hand, when two objects are placed together and heat flows from hotter object to colder object then this process is known as conduction. Therefore, energy is dissipated in conduction process.

Since energy released released goes into the atmosphere and is not used anywhere.

Thus, we can conclude that when an exothermic reaction releases thermal energy, this energy is usually not useable to do work and it is dissipated by conduction.

8 0

3 years ago

Which of the following is NOT an insulator?

sergejj [24]

I don’t know how air would be an insulator so I’m guessing that one isn’t

4 0

3 years ago

Read 2 more answers

At the periphery of a hurricane the air is ____, and several kilometers above the surface, in the eye, the air is ____.

At the periphery of a hurricane the air is , and several kilometers above the surface, in the eye, the air is .