Answer:
The approximate change in entropy is -14.72 J/K.
Explanation:
Given that,
Temperature = 22°C
Internal energy
Final temperature = 16°C
We need to calculate the approximate change in entropy
Using formula of the entropy
Where, = internal energy
T = average temperature
Put the value in to the formula
Hence, The approximate change in entropy is -14.72 J/K.
The correct option is A.
Coal fire plants when operating correctly give off carbon dioxide which accumulate carbon and other green house gases in the atmosphere. This accumulation result in the global warming of the earth.
Answer:
South
Explanation:
cause frictional fore always acts opposite to the direction of motion and opposite of North
Hope this answers your questions...
When heat is added to a substance, the atoms and molecules begin to vibrate faster. As that happens the gap between them increases. Opposite happens when cooled, atoms and molecules begin to vibrate slower and the gap between each other decreases. Thus the motion and spacing between atoms signifies the state of matter of the substance.
Answer:
b) Joule's law is that the heat evolved per second, or the electric power loss, P, equals the current I squared times the resistance R, or P = I2R. The power P has units of watts, or joules per second, when the current is expressed in amperes and the resistance in ohms.
Explanation:
c) P= v2÷R
PR=V×V= 100×42=4200
v=sqroot 4200= 64.8volts