Answer:
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An immersion heater has a resistance of 50Ω and carries a ...brainly.com › Engineering › High School
An immersion heater has a resistance of 50Ω and carries a current of 2.5A current. ... What will be the final temperature of 500 g of water that is initially at 20ºC after 3 minutes if Does the water absorb all the heat given off by the heater? Does ...
Explanation:
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An immersion heater has a resistance of 50Ω and carries a ...brainly.com › Engineering › High School
An immersion heater has a resistance of 50Ω and carries a current of 2.5A current. ... What will be the final temperature of 500 g of water that is initially at 20ºC after 3 minutes if Does the water absorb all the heat given off by the heater? Does ...
Answer: P = 0.416 kW
Explanation:
taken a step by step process to solving this problem.
we have that from the question;
the amount of heat rejected Qn = 4800 kJ/h
the cooling effect is Ql = 3300 kJ/h
Applying the first law of thermodynamics for this system gives us
Шnet = Qn -Ql
Шnet = 4800 - 3300 = 1500 kJ/h
Next we would calculate the coefficient of performance of the refrigerator;
COPr = Desired Effect / work output = Ql / Шnet = 3300/1500 = 2.2
COPr = 2.2
The Power as required gives;
P = Qn - Ql = 4800 - 3300 = 1500 kJ/h = 0.416
P = 0.416 kW
cheers i hope this helps!!!!1
Answer:
In the center and directed away from it.
Explanation:
The direction along the radius and directed away from the center is known as radial direction.
The velocity is highest in the radial direction pointing away from the center, this is because of the reason that when the particle executes its motion in the direction that is radial, then it is not acted upon by any force that opposes the motion of the particle and thus there is no obstruction to the velocity of the particle and it is therefore, the highest in the radial direction.
Where’s the question at ???
Answer:
The temperature attains equilibrium with the surroundings.
Explanation:
When the light bulb is lighted we know that it's temperature will go on increasing as the filament of the bulb has to constantly dissipates energy during the time in which it is on. Now this energy is dissipated as heat as we know it, this heat energy is absorbed by the material of the bulb which is usually made up of glass, increasing it's temperature. Now we know that any object with temperature above absolute zero has to dissipate energy in form of radiations.
Thus we conclude that the bulb absorbs as well as dissipates it's absorbed thermal energy. we know that this rate is dependent on the temperature of the bulb thus it the temperature of the bulb does not change we can infer that an equilibrium has been reached in the above 2 processes i.e the rate of energy absorption equals the rate of energy dissipation.
Steady state is the condition when the condition does not change with time no matter whatever the surrounding conditions are.