Heating Definition and 616 Threads

Suppose here's a covered bottle full of liquid. I heat the bottle so the liquid changes to gas state. Will the bottle be broken since gas creates a bigger pressure?

Well i am doing my physics investigation about temperature, and need an interesting effect that takes place at a precise temperature. I remember watching this thing ages ago on discovery. It was about mining and they needed large quantities of ice. So instead of making it by the normal process...

"In the circuit in the figure, a 20-ohm resistor sits inside 102 g of pure water that is surrounded by insulating Styrofoam." "If the water is initially at temperature 10.1 deg. celsius, how long will it take for its temperature to rise to 58.9 deg. celsius? Use as the heat capacity of...

Can someone help me explain how a plate of metal's yield strength changes as it is 1) Rolled (flattened) then 2) Heated for some hours and cooled, and then finally 3) Cooled and rolled additionally. Does the yield strength increase at first, then drop, and then increase again? That's what I...

I'm currently sitting in a very cold room, it's cold because heating costs too much darn money (we haven't got central heating:(). Well, this got me thinking over cheap ways to heat a room. The idea of heating air with microwaves struck me being really cheap and effiecient. But it's so obvious...

This is what I've got: Iron mass: 81.9g Initial iron temp.: 92'C Water volume: 100mL Initial water temp.: 25'C Final water temp.: 29'C What the the experimental heat capacity of iron? Thanks :) Bjorn

What the heck is isometric heating?

can someone please tell me which equation i need to use for this problem? A 50g metal spoon is placed in a cup with 200g of hot coffee. If the spoon's initial temperature is 20\circ C and the coffee's temperature is 100\circ C , what is the temperature of the spoon and coffee when their...

I am working on a project involving electrically heating clayey soils (having 55% moisture content and 0.5 M salt (nacl/KCl) solutions in the pore space. Does anybody know if electrolysis of water/electrolyte is a concern with AC currents (230 V, 60 Hz frequencies)? Thanks, WWW :smile:

I have this post lab question that I am not sure how to answer... What error in calculation would result if, in the procedure for forming the magnesium oxide, the fumes in the intial heating were allowed to escape? Any help would be great! Thanks!

I need to melt a small quantity (probably less than a cubic centimeter) of a substance at around 200°C in the most uniform way possible and I'd like to have your ideas about how to heat it. Using easily accessible stuff would be better. I've thought of controlling a soldering iron with a...

Hello all, I do not know how to solve this proble and was wondering if you could offer some guidance. Question: How long after it is turned on will a 100-W electric heater take to bring a quart of water to a boil from room temperature 20 deg C? Here's what I know: T_i=20 T_f=100...

The fact that the solar corona has a temperature of a few million degrees has puzzled solar physicists for a long time, considering the comparatively low temperature of about 6000oK at the sun's apparent surface (the photosphere). Clearly, the laws of thermodynamics seem to rule out that a cool...

Heating of the Earth's core must have a logical solution, which led me to this idea, the work done by gravity on vibrating molecules throughout the Earth moves the surface heat of the earth towards the Earth's core,amplifing it as it moves to the Earth's center.This is backed up by the...

Would a heating element have a very high resistance, or a very low resistance? (All comments in this post are based around the fact that the voltage is the same for each situation) I would have thought that a higher resistance would have resulted in more heat loss, but I've been taught that the...

It seems to me that infrared is always considerd responsible for radiant heating. Why is this so, what makes infrared so special when it comes to heating things? I would have thought that higher frequncies would tend to 'feel' hotter, but this doesn't seem to be true.