The density of aluminum is 2.7 g/ml.
Answer:
0.2 T
Explanation:
Magnetic field is inversely proportional to the distance from wire since the distance is halved therefore magnetic field will be doubled.
Answer:
![c=10\ J/kg^{\circ} C](https://tex.z-dn.net/?f=c%3D10%5C%20J%2Fkg%5E%7B%5Ccirc%7D%20C)
Explanation:
Given that,
Heat required, Q = 1200 J
Mass of the object, m = 20 kg
The increase in temperature, ![\Delta T=6^{\circ} C](https://tex.z-dn.net/?f=%5CDelta%20T%3D6%5E%7B%5Ccirc%7D%20C)
We need to find the specific heat of the object. The heat required to raise the temperature is given by :
![Q=mc\Delta T\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{1200}{20\times 6}\\\\c=10\ J/kg^{\circ} C](https://tex.z-dn.net/?f=Q%3Dmc%5CDelta%20T%5C%5C%5C%5Cc%3D%5Cdfrac%7BQ%7D%7Bm%5CDelta%20T%7D%5C%5C%5C%5Cc%3D%5Cdfrac%7B1200%7D%7B20%5Ctimes%206%7D%5C%5C%5C%5Cc%3D10%5C%20J%2Fkg%5E%7B%5Ccirc%7D%20C)
So, the specific heat of the object is
.
Entropy is an extensive property of a thermodynamic system. It quantifies the number Ω of microscopic configurations (known as microstates) that are consistent with the macroscopic quantities that characterize the system (such as its volume, pressure and temperature).[1] Under the assumption that each microstate is equally probable, the entropy
S
S is the natural logarithm of the number of microstates, multiplied by the Boltzmann constant