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gulaghasi [49]
3 years ago
15

"It is impossible to devise a process which may convert heat, extracted from a single

Physics
1 answer:
Vladimir [108]3 years ago
7 0

Answer:

According to the second law of thermodynamics, we are unable to use the heat of the ocean and the atmosphere because we do not have a reservoir that has a temperature lower than the ocean or the atmosphere.

Explanation:

As you already know, the ocean and atmosphere have a lot of thermal energy, however, we are unable to convert this energy into mechanical energy that would be useful for our activities. This can be explained by the second law of thermodynamics, since it states that the presence of two bodies with different temperatures is necessary for it to be possible to transform heat into work.

In this case, to transform the thermal energy of the ocean and the atmosphere into mechanical energy we would need the existence of a thermal motor, which is only possible to be established when there is a body with high thermal energy and a sink, a reservoir, with low thermal energy, which will be the place where the heat will be expelled, to be converted into work. We do not have a reservoir with less thermal energy than the ocean and the atmosphere, so we cannot use their energy.

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An airplane during departure has a constant acceleration of 3 m / s².
Rama09 [41]

Constant acceleration of plane = 3m/s²

a) Speed of the plane after 4s

Acceleration = speed/time

3m/s² = speed/4s

S = 12m/s

The speed of the plane after 4s is 12m/s.

b) Flight point will be termed as the point the plane got initial speed, u, 20m/s

Find speed after 8s, v

a = 3m/s²

from,

a = <u>v</u><u> </u><u>-</u><u> </u><u>u</u>

t

3 = <u>v</u><u> </u><u>-</u><u> </u><u>2</u><u>0</u>

8

24 = v - 20

v = 44m/s

After 8s the plane would've 44m/s speed.

6 0
3 years ago
You accidentally drop a book down a stairwell. Assuming no air resistance, How fast will the book be moving after 1.1 second?
nlexa [21]
It would be accelerating at -9.8 m/s^2 so it’s velocity would be equal to -9.8•1.1 so the answer is 10.78m/s
3 0
3 years ago
Read 2 more answers
What is the maximum number of lines per centimeter a diffraction grating can have and produce a complete first-order spectrum fo
Vitek1552 [10]

Answer:

1315789.47368 lines/m

Explanation:

m = Order = 1

sin\theta = 1 For maximum condition

\lambda = Wavelength = 760 nm maximum

From Rayleigh criteria we have the expression for the gap

d=\dfrac{m\lambda}{sin\theta}\\\Rightarrow d=\dfrac{1\times 760}{1}\\\Rightarrow d=760\ nm

The number of lines is the reciprocal of the slit distance

n=\dfrac{1}{d}\\\Rightarrow n=\dfrac{1}{760\times 10^{-9}}\\\Rightarrow n=1315789.47368\ /m

The number of lines is 1315789.47368 per meter

7 0
3 years ago
Compare and contrast angular momentum and linear momentum. How are mass and velocity related to momentum?
Cerrena [4.2K]

Answer:

Linear momentum is mass multiplied by velocity, so it follows that angular momentum is the moment of inertia, measured in kilogram meters squared, multiplied by angular velocity, measured in radians per second. Radians are just an alternative to degrees.

3 0
3 years ago
How is a magnetic field generated?
alekssr [168]
It would be B I think
4 0
3 years ago
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