How Long Does It Take to Heat Ice from -15C to 55C Water?

You can rearrange the equation to solve for time: T = Q / (Power).In summary, to find the time it takes to reach 55C from -15C using a 40 watt hot plate, use the equation T = Q / (Power), where Q is the amount of heat needed and Power is the wattage of the hot plate.
  • #1
TwoBelt
2
0

Homework Statement


I just solved how much heat is needs to make a -15C ice to 55C water but i don't know how to find how long it takes.

How long will it take to reach 55C?

Homework Equations





The Attempt at a Solution


Not even sure where to begin
 
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  • #2
Are you given a heater of some wattage is being used to provide the heat?
 
  • #3
yes its a 40 watt hot plate i didnt see that before. So would you do 40w=Q/T(variable)?
 
  • #4
TwoBelt said:
yes its a 40 watt hot plate i didnt see that before. So would you do 40w=Q/T(variable)?

Yes, remember that Power = Rate of transfer of energy / time, so you are correct.
 
  • #5
with this problem. It would be helpful to have more information such as the mass of the ice and the specific heat capacity of the material. Without this information, it is impossible to determine the time it would take to reach the final temperature. Additionally, the rate of heating would also depend on the method of heating (e.g. direct heat, convection, etc.) and the temperature of the heat source.
 

Related to How Long Does It Take to Heat Ice from -15C to 55C Water?

What is the "Final Temperature Problem"?

The "Final Temperature Problem" is a physics problem that involves determining the final temperature of a system after heat transfer has occurred between two or more objects.

What factors affect the final temperature in the "Final Temperature Problem"?

The final temperature in the "Final Temperature Problem" is affected by several factors, including the initial temperatures of the objects, their masses, and their specific heat capacities.

How do you calculate the final temperature in the "Final Temperature Problem"?

The final temperature can be calculated using the formula: Tf = (m1c1T1 + m2c2T2) / (m1c1 + m2c2), where Tf is the final temperature, m1 and m2 are the masses of the objects, c1 and c2 are their specific heat capacities, and T1 and T2 are their initial temperatures.

What assumptions are made in the "Final Temperature Problem"?

The "Final Temperature Problem" assumes that there is no heat loss to the surroundings, the objects are in thermal equilibrium, and there is no phase change involved.

What are some real-life applications of the "Final Temperature Problem"?

The "Final Temperature Problem" has many real-life applications, such as determining the final temperature of a cup of coffee after adding milk, calculating the temperature of a mixture of hot and cold water, and finding the equilibrium temperature of two objects in contact.

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