Calculate Heat for Melting 10kg Ice Block

  • Thread starter Thread starter strawberry7
  • Start date Start date
  • Tags Tags
    Energy Heat
AI Thread Summary
To calculate the heat energy required to melt a 10 kg block of ice at 0 degrees Celsius into liquid water at the same temperature, the correct formula is Q = mL, where m is the mass and L is the latent heat of fusion. The latent heat of fusion for water is 3.34 x 10^5 J/kg. Using this formula, the total heat energy required is Q = 10 kg * 3.34 x 10^5 J/kg, resulting in 3.34 x 10^6 J. It is important to note that during the phase change, the temperature remains constant, and thus the initial equation used was incorrect. Understanding the distinction between temperature change and phase change is crucial in thermodynamics calculations.
strawberry7
Messages
28
Reaction score
0

Homework Statement


Calculate the amount of heat energy required to melt a 10 Kg block of ice at 0 degrees C into liquid water at 0 degrees C. The latent heat of fusion for water is 3.34 * 10to the 5

Homework Equations



Q = mc(change in temperature)

The Attempt at a Solution



Q = (10)(3.34 * 10to the 5)(0)
Q= 0
 
Last edited:
Physics news on Phys.org
That is not the equation for thermal energy involving latent heat of fusion.
 
that is exactly what the question said...Actualy therre is a typo I'll edit it
 
The ice is undergoing a phase change here (from ice at 0 degrees to water at 0 degrees). In this situation, there is no change in temperature even though thermal energy is being generated. The equation you are using is not the one you need for this. You need Q=mL, where m is the mass of the ice, and L is the latent heat (of fusion in this case). Look it up.
 
thankyou!
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Struggling to make relation between elastic force and height'
Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
Back
Top