A current of 2.0 A flows through a circuit containing a motor with a resistance of 12 ohm how much energy is converted if the mo
1 answer:
You might be interested in
Answer:
Explanation:
As we know that in AC circuit we have
here we have
V = 59 V
i = 5.05 A
so we will have
also we know that
here we will have
Answer:
The amount of thermal energy needed is 15167500 joules.
Explanation:
By First Law of Thermodynamics, we see that amount of thermal energy (), in joules, is equal to the change in internal energy. From statement we understand that change in internal energy consisting in two latent components (
,
), in joules, and two sensible component (
), in joules, that is:
(1)
By definitions of Sensible and Latent Heat, we expanded the formula:
(2)
Where:
- Mass, in kilograms.
- Latent heat of fussion of water, in joules per kilogram.
- Latent heat of vaporization of water, in joules per kilogram.
- Specific heat of ice, in joules per kilogram per degree Celsius.
- Specific heat of water, in joules per kilogram per degree Celsius.
- Change in temperature of ice, measured in degrees Celsius.
- Change in temperature of water, measured in degrees Celsius.
If we know that ,
,
,
,
,
and
, then the amount of thermal energy is:
The amount of thermal energy needed is 15167500 joules.