Time to raise temperature of frozen body

AI Thread Summary
The discussion revolves around defrosting a completely frozen bottle of wine placed in a bucket of warm water. Key details include the water temperature at 50 degrees Celsius, the frozen wine at -20 degrees Celsius, and the bottle's capacity of 750 ml in a 10-liter bucket. Participants emphasize the need for specific measurements and relevant equations to calculate the defrosting time accurately. The equation Q=m c ∂T is mentioned as a starting point for theoretical calculations. Overall, the conversation highlights the importance of precise data for solving the problem effectively.
ColonelCronus
Messages
4
Reaction score
0
I wanted to figure out some simple 'party' trivia, but it seems I suck a physics.

The scenario:

A bottle of wine has been placed in the freezer to cool. It is left there too long and freezes completely.

The host, fretting, decides to defrost the wine in a bucket of warm water. The water is not replenished.

How long will it take for the wine to return to liquid state?

Cheers Fellas and Ladyfolk.
 
Science news on Phys.org
I do not see any need to invoke theoretical physics when experiments can be performed very cheaply.
For a theoretcal solution the themal condutivity of the bottle would need to be obtained by measurement so why not go straight ahead and do it with wine.
 
You haven't given us enough information. What is the temperature of the water, the wine, how much water is the wine in, how big is the bottle, etc.

Also, have you looked up the relevant equations and such to be able to do this?
 
Drakkith said:
You haven't given us enough information. What is the temperature of the water, the wine, how much water is the wine in, how big is the bottle, etc.

Temperature of water in the bucket: 50 deg C.
Temperature of frozen bottle of wine: -20 dec C.
Bottle capacity: 750 ml
Bucket capacity: 10 litres

Drakkith said:
Also, have you looked up the relevant equations and such to be able to do this?

Yes. Q=m c \partialT.
 
I was watching a Khan Academy video on entropy called: Reconciling thermodynamic and state definitions of entropy. So in the video it says: Let's say I have a container. And in that container, I have gas particles and they're bouncing around like gas particles tend to do, creating some pressure on the container of a certain volume. And let's say I have n particles. Now, each of these particles could be in x different states. Now, if each of them can be in x different states, how many total...
Thread 'Why work is PdV and not (P+dP)dV in an isothermal process?'
Let's say we have a cylinder of volume V1 with a frictionless movable piston and some gas trapped inside with pressure P1 and temperature T1. On top of the piston lay some small pebbles that add weight and essentially create the pressure P1. Also the system is inside a reservoir of water that keeps its temperature constant at T1. The system is in equilibrium at V1, P1, T1. Now let's say i put another very small pebble on top of the piston (0,00001kg) and after some seconds the system...
I need to calculate the amount of water condensed from a DX cooling coil per hour given the size of the expansion coil (the total condensing surface area), the incoming air temperature, the amount of air flow from the fan, the BTU capacity of the compressor and the incoming air humidity. There are lots of condenser calculators around but they all need the air flow and incoming and outgoing humidity and then give a total volume of condensed water but I need more than that. The size of the...
Back
Top