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babymother [125]
4 years ago
15

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

Physics
2 answers:
Setler [38]4 years ago
6 0

The correct answer is B

MArishka [77]4 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.

You might be interested in
If you walk 1.4 km north and then 4.8 km east, what are the magnitude and direction of your resultant displacement?
olchik [2.2K]

A


North and east are perpendicular directions hence we can use them as the basis of our coordinate system. The coordinates of this point can then simply be represented as

P = 1.4 N + 4.8 E (km)

The magnitude can be given by the right triangle formula :

P = \sqrt{N^2 + E^2}

= 5 km

Direction  = atan(N/E) = 16.3  deg north of east = 73.7 deg east of north


8 0
3 years ago
How to find instantaneous velocity physics?
evablogger [386]
You should have the velocity as a function of time either given explicitly or implicitly (a graph)

v = ds/dt  (differentiating the position vector)

integrating the acceleration.

you can use impulse or work and energy principle and also newton law of motion to find acceleration then velocity


NOT SURE IF THAT WHAT YOU WANT.
 
8 0
3 years ago
In 2006, there were 3,858 oil and gas platforms in the Gulf of Mexico. Oil platforms are used to extract oil and natural gas fro
VashaNatasha [74]

Answer:

Is a)

Explanation: i took the test so dw

5 0
4 years ago
A supersonic aircraft flies at 3 km altitude at a speed of 1000 m/s on a standard day. How long after passing directly above a g
Gre4nikov [31]

Answer:

<h3>After 3seconds</h3>

Explanation:

A supersonic aircraft flies at 3 km altitude at a speed of 1000 m/s on a standard day. How long after passing directly above a ground observer is the sound of the aircraft heard by the ground observer

Using the formula for calculating speed expressed as;

Speed = Distance/Time

Given;

Distance = 3km = 3000m

Speed = 1000m/s

Required

How long after passing directly above a ground observer is the sound of the aircraft heard by the ground observer (Time)

From the formula;

Time = Distance/speed

Time = 3000/1000

Time = 3seconds

Hence the sound of the aircraft is heard after 3 seconds

7 0
3 years ago
When you have a pot of water on the stove, heat is transferred to the water. Describe the behavior of the water molecules and ho
NikAS [45]
<span>Temperature causes water molecules to move more quickly, because each individual molecule has more energy as it gets hotter (according to Kinetic molecular theory). If you get water hot enough, the molecules move so much that the hydrogen bonds that hold them together start to break and the water becomes a gas ... water vapor. This your answer unless there are choices.</span>
3 0
4 years ago
Read 2 more answers
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