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s344n2d4d5 [400]
2 years ago
8

Which of the following statements is/are true? Check all that apply. Check all that apply. The total mechanical energy of a syst

em is constant only if nondissipative interactions occur. Mechanical energy can be dissipated to nonmechanical forms of energy. The total mechanical energy of a system is equally divided between kinetic and potential energy. The total mechanical energy of a system is constant only if dissipative interactions occur. The total mechanical energy of a system, at any one instant, is either all kinetic or all potential energy.
Physics
1 answer:
Taya2010 [7]2 years ago
8 0

Answer:

1) True, 2) True, 3) False, 4) False, 5) False

Explanation:

1) True. Dissipative energy cannot be recovered, in general it is a form of heat

2) True. The dissipation can be by radiation, heat

3) False. Mechanical energy is divided into K and U but not in equal parts

4) False. When there are dissipative interactions, part of the mechanical energy is set in the form of heat, so its value decreases

5) False. Mechanical energy is the sum of those two energies

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Answer:

0.732 years

Explanation:

We are given that

Volume of fluid filled in bottle=193 U.S

1 U.S fluid  gallon=231 cubic inch

193 U.S gallon=231\times 193=44583in^3

1 in^3=1.63871\times 10^{-5}m^3

44583in^3=44583\times 1.63871\times 10^{-5}=0.731m^3

Density of water=1000kg/m^3

Mass=Volume\times density

Using the formula

Mass=0.731\times 1000=731kg

1kg =1000g

731kg=731\times 1000=731\times 10^3g

By using 1000=10^3

1.9 g of fluid takes time to fill in the bottle=1 min

1 g of fluid takes time to fill in the bottle=\frac{1}{1.9}min

731\times 10^3g of fluid takes time to fill in the bottle=\frac{1}{1.9}\times 731\times 10^3min

Time=384.7\times 10^3min

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Time=384.7\times 10^3\times \frac{1}{60\times 24\times 365}years

Time =0.732 years

Hence, it takes to filling the 193 U.S fluid gallons in bottle=0.732 years

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2 years ago
What mass of water will change its temperature by 20.0 degrees Celsius when 515 J of heat is added to it? the specific heat of w
andrey2020 [161]
The problem can be solve using the formula:
q = m Cp T
where q is the heat added to the substance
m is the mass of the substance
Cp is the specific of the substance
T is the change in temperature of the subtance

q = m Cp T
515 = m ( 4.18 ) ( 20)
m = 515 / ( 4.18) ( 20 )
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Explanation:

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