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77julia77 [94]
3 years ago
6

Compare the properties of sodium chloride and sand

Physics
1 answer:
Jet001 [13]3 years ago
6 0
I am 11 year old and I don't known the answer to this question
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A gaseous refrigerant undergoes compression when 150 j of work is done on it. if the internal energy of the gas increases by 120
zhenek [66]

The heat transferred is -30J

When the gas undergoes compression, work is done on the gas and its internal energy increases.

According to the first law of thermodynamics, the increase in internal energyΔU is the sum of the heat given to the gas ΔQ and the amount of work done on the gas ΔW

\Delta U=\Delta Q +\Delta W

The work done on the gas is 150 J due to compression and the internal energy of the gas increases by 120 J.

Therefore, the heat given to the gas is given by,

\Delta Q =\Delta U -\Delta W\\ =120 J -150 J\\  =-30 J

Thus, an amount of heat equal to 30 J flows out of the system.

3 0
3 years ago
Which of the following actions would decrease the energy stored in a parallel plate capacitor when a constant potential differen
Debora [2.8K]

Answer:

increasing the separation between the plates

Explanation:

The increase in the vacuum/separation between the plates in a parallel plate capacitor connected to a constant potential difference decreases the energy stored in the capacitor. the increase in the separation of the plates of a parallel plate capacitor reduces the capacitance of the capacitor because

Q(charge) = CV  V = VOLTAGE , c = capacitance  

E = 1/2 eAV^2/ D  ( ENERGY STORED )

where D = distance between plates, e = dielectric, A = area of capacitor , V = potential difference

6 0
3 years ago
Convert 463.833 m/s to km/ min
Alexus [3.1K]

Answer:

27.82998 km/min

Explanation:

To convert m/sec into km/hr, multiply the number by 18 and then divide it by 5.

8 0
3 years ago
Spider-Man and Ned were testing the distance he could shoot his web depending on the angle at which he points his web shooter. H
Serga [27]

Answer:

3. Madison, WI

4. Quito, Equador

6. Main Sequence stars are becoming red giants

Explanation:

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3 years ago
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Which of the following does each different kind of atom represent?
r-ruslan [8.4K]

Answer:

B

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because atoms make up an element.

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3 years ago
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