Answer:
D I think.
Explanation:
It's hard to tell without the short story that was in the lesson this is a hard question to answer. You can delete this if you want.
Answer:
1.48 kg
Explanation:
mass of copper = 4 kg
Decrease in temperature of copper = 36.9°C
increase in temperature of water = 9.20°C
Let the mass of water is m.
Specific heat of water = 4181 J/Kg°C
Specific heat of copper = 385 J/kg°C
According to the principle of caloriemetery
Heat lost by copper = heat gained by water
mass of copper x specific heat of copper x decrease in temperature = mass of water x specific heat of water x increase in temperature
4 x 385 x 36.9 = m x 4181 x 9.20
56826 = 38465.2 m
m = 1.48 kg
Thus, the mas of water is 1.48 kg.
mas of water
Because in a compressed gas particles are closer together, so the potential energy is larger, but since potential energy is negative, then the internal energy is lower
Explanation:
The internal energy of a gas is the sum of the potential energy (PE) and the kinetic energy (KE) of the molecules of the gas:
The kinetic energy of the molecules is directly proportional to the temperature of the gas, T, and it only depends on the temperature: therefore, if we take two gases at the same temperature, then their molecules have the same kinetic energy, no matter if their volumes are different.
The potential energy of the molecules in a gas instead is the energy due to the intermolecular forces between the molecules. The closer the particles are in a gas, the stronger the intermolecular forces, the larger the value of the potential energy; however, potential energy has a negative value. This means that for a compressed gas (particles closer to each other), the potential energy is more negative, and therefore the total internal energy E of a compressed gas is less than that of a rarefied gas.
Learn more about ideal gases:
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brainly.com/question/7316997
brainly.com/question/3658563
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Answer:
b mate im pretty sure ig :)