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solmaris [256]
4 years ago
12

The first law of thermodynamics states that . Is this also a statement of the principle of conservation of energy?

Physics
2 answers:
Gekata [30.6K]4 years ago
7 0
B. Should be your answer.
nikdorinn [45]4 years ago
5 0

The correct choice is

Yes, the heat that flows into the system is used to change the internal energy of the gas and becomes work done by the piston.

According to first law of thermodynamics,

Q = W + U

where Q = heat flowing into the system

W = work done by the system

U = change in internal energy of the system

hence the total energy remains same all the time which is what the principle of conservation of energy states.

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How fast does water flow from a hole at the bottom of a very wide, 7.1 mm deep storage tank filled with water
trapecia [35]

Answer:

<h2>The water will move faster</h2>

Explanation:

This happens as part of the consequences of the continuity of an incompressible fluid, of which water is an example.

so as the water emerges from the wider section the flow velocity increases and vice versa.

Hence the flow velocity in indirectly proportional to the area

The continuity equation is given below for our analysis

A1V1=A2V2\\-------------------1

where

            A1= the area of the wider section of the tank

            V1= the flow velocity from the wider section

            A2= the area of the hole at the bottom

            V2= velocity of flow at the bottom.

5 0
3 years ago
Hydrogen is in Group 1A of the periodic table, known as the alkali metals, although it obviously isn't a metal. What is the reas
Contact [7]

Answer:A

Explanation:Hydrogen has only 1 electron.

5 0
3 years ago
Read 2 more answers
(BRAINLIEST W/ WORK SHOWN!!!) Help with Physics question?
VashaNatasha [74]

Answer:

\boxed {3.43 x 10^{3}}

Explanation:

We know that speed is defined as distance moved per unit time hence expressed as v=\frac {d}{t} where v is speed in m/s, d is distance in m and t is time in seconds. Making d the subject of the above formula then

d=vt

Substituting 343 m/s for d and 10 s for t then

d= 343\times10= 3430= 3.43 x 10^{3}

Therefore, the distance between speaker and deter is \boxed {3.43 x 10^{3}}

6 0
3 years ago
What kind of acceleration occurs when an object speeds up? positive negative neutral zero
jarptica [38.1K]

Answer:

POSITIVE

Explanation:

The acceleration of an object is given by the rate of change of velocity.

u and v are initial and final velocities

If the final velocity is more than that of the initial velocity, the acceleration of the object is positive. It means positive acceleration occurs when an object speeds up. Hence, the correct option is (a) "positive".

5 0
3 years ago
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Give the SI unit. For physics
IrinaVladis [17]

Answer:

metre (m) - unit of length

kilograms (kg) - unit of mass

second (s) - unit of time

ampere (A) - unit of electrical current

kelvin (K) - unit of temperature

mole (mol) - unit of the amount of substance

Explanation:

6 0
3 years ago
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