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xxTIMURxx [149]
3 years ago
5

How is energy transformed to chemical energy?

Physics
1 answer:
morpeh [17]3 years ago
6 0

it is transfred through the basics

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A 6.5 l sample of nitrogen at 25◦c and 1.5 atm is allowed to expand to 13.0 l. the temperature remains constant. what is the fin
ollegr [7]
Since the temperature of the gas remains constant in the process, we can use Boyle's law, which states that for a gas transformation at constant temperature, the product between the gas pressure and its volume is constant:
pV=k
which can also be rewritten as
p_1 V_1 = p_2 V_2 (1)
where the labels 1 and 2 mark the initial and final conditions of the gas.

In our problem, p_1 = 1.5 atm, V_1 =6.5 L and V_2 =13.0 L, so the final pressure of the gas can be found by re-arranging eq.(1):
p_2 = p_1  \frac{V_1}{V_2}= (1.5 atm) \frac{6.5 L}{13.0 L}=0.75 atm

Therefore the correct answer is
<span>1. 0.75 atm</span> 
8 0
3 years ago
The diagram below shows a model of the Earth's orbit around the Sun.
Sladkaya [172]
I would say that I and IV because summer is I and fall is IV
7 0
3 years ago
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A car is traveling at 70 km/h. It then uniformly decelerates to a complete stop in 12 s. Find its acceleration ( in m/s2 ).
Yakvenalex [24]

Answer:

Acceleration will be -1.620m/sec^2

Explanation:

We have given initial speed of the car is 70 km/hr

We know that 1 km = 1000 m

And 1 hour = 3600 sec

So 70km/hr=70\times \frac{1000m}{3600sec}=19.444m/sec

It is given that car stops in 12 sec

So final speed of the car v = 0 m/sec

Time t = 12 sec

From first equation of motion v = u+at

So 0=19.444+a\times 12

a=\frac{-19.444}{12}=-1.620m/sec^2 ( negative sign indicates that speed of the car will constantly decrease )

5 0
3 years ago
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What would make oppositely charged objects attract each other more? increasing the positive charge of the positively charged obj
kykrilka [37]

Answer:

A.

Explanation:

I did the test :D

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2 years ago
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The fact that your eyes rotate in their sockets, either getting closer or farther from each other, as an object changes its dist
marta [7]

Answer:

convergence

Explanation:

5 0
3 years ago
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