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babymother [125]
3 years ago
15

What is true about energy that is added to a closed system?

Physics
2 answers:
Setler [38]3 years ago
6 0

The correct answer is B

MArishka [77]3 years ago
6 0

Answer:

B. It does work or increases thermal energy.

Explanation:

As we know by first law of thermodynamics that

Q = \Delta U + W

now we have

\Delta U = nC_v\Delta T

so internal energy is based on the change in temperature of the gas

Q = heat given to the system

W = work done by the gas

now we know that when heat is given to the system then by energy conservation work some of its heat is used to increase the temperature of gas as its internal energy and other part of heat is used to do some work.

so correct answer will be

B. It does work or increases thermal energy.

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When you're asked to calculate moments and torque, what's the main difference in calculation? Also what is a couple?
leva [86]

Answer:

a) Explanation below. b) Explanation below

Explanation:

Torque is defined as the product of a force by a radius, while momentum is defined as the product of force by a distance. Mathematically we would have

T = F * r

M = F * d

where:

T = torque = [N*m]

M = moment = [N*m]

F = force =[N]

d = distance [m]

r = radius [m]

Although they have the same units, the difference between them is the application. For the case of torque this is always applied in parts that are in rotation, such as the shafts of cars, the shafts of pumps, torque in gears and etc. While the moment can be applied to a body without the need for it to rotate.

A couple, is as its name suggests a couple of forces of equal magnitude but opposite sense and do not share a line of action. A body under the action of a couple of forces tends to rotate the body without moving it from one point to another.

7 0
3 years ago
The steps in the formation of sedimentary rocks are listed below in an incorrect order.
Arlecino [84]
The first step in the formation of sedimentary rock is weathering of preexisting rocks. The second step is transport of the weathering products. The third step is deposition of the material. And at the end there is compaction and cementation of the sediment to form a rock.
According to this, the following shows the correct order of steps in the formation of sedimentary rocks:
C. <span>1, 4, 3, 2
</span>Rocks are weathered.Small pieces of rocks are carried by water.They are deposited in layers.<span>The sediments are compacted together.</span>
5 0
2 years ago
Read 2 more answers
While driving on a highway, your HMMWV starts to pull to one side. You stop and check your tires – one tire is going flat. There
MrRissso [65]

Answer:

30 miles people hour (mph)

Explanation:

The maximum speed for one flat tyre is 30mph, for both tyres it is 20 mph and for two tyres on the same side it is 30mph. When a tyre is punctured driving at high speed should be avoided and not too long distance should be covered to avoid further accident and for the safety of other vehicles. Speed limit and distance for flat tires should be strictly followed.

3 0
3 years ago
Electronic flash units for cameras contain a capacitor for storing the energy used to produce the flash. In one such unit, the f
gladu [14]

Answer:

A) energy to be stored = 354.4J

B) capacitance = 0.0454 farad

Explanation:

Detailed explanation and calculation is shown in the image below

8 0
2 years ago
you notice a solid air freshener seems to disappear over time. you think it must be changing into a gas. this is an example of
poizon [28]
This is an example of sublimation where a substance goes directly from solid to a gas, skipping the liquid stage. 
3 0
3 years ago
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