A length of thin wire is placed over a block of ice (or an icecube) at 0°C. The wire hangs down both sides of the ice,and weights are hung from the ends of the wire. It is foundthat the wire cuts its way through the ice cube, but leaves asolid block of ice behind it. This process is called regelation.Explain how this happens by inferring how the freezingpoint of water depends on pressure.

A length of thin wire is placed over a block of ice (or an icecube) at 0°C. The wire hangs down both sides of the ice,and weights are hung from the ends of the wire. It is foundthat the wire cuts its way through the ice cube, but leaves asolid block of ice behind it. This process is called regelation.Explain how this happens by inferring how the freezingpoint of water depends on pressure.

Similar questions

The main span of San Francisco’s Golden Gate Bridge is 1275 m long at its coldest. The bridge is exposed to temperatures ranging from –15ºC to 40ºC . What is its change in length between these temperatures? Assume that the bridge is made entirely of steel.
What minimum heat is needed to bring 100 g of water at 40 ∘C to the boiling point and completely boil it away? The specific heat of water is 4190 J/(kg⋅K) and its heat of vaporization is 22.6××1055 J/kg. Express your answer with the appropriate units.
The number of kg of liquid nitrogen evaporated was 12 kg. Suppose the liquid N2 were all at the boiling point of liquid nitrogen, – 196 °C. How much energy in kJ is needed to evaporate off the 12kg of liquid N, assuming no change in temperatue? The latent heat of vaporization of liquid nitrogen is 199,200 J/kg.
The main span of San Francisco’s Golden Gate Bridge is 1275 m long at its coldest. The bridge is exposed to temperatures ranging from -15oC to 40oC. What is its change in length between these temperatures? Assume that the bridge is made entirely of steel.
A high-pressure gas cylinder contains 50 L of toxic gas at a pressure of 1.5.107 N/m² and a temperature of 23 °C. Its valve leaks after the cylinder is dropped. The cylinder is cooled to dry ice temperature -78.5 °C to reduce the leak rate and pressure so that it can be safely repaired. (a) What is the final pressure in the tank, assuming a negligible amount of gas leaks while being cooled and that there is no phase change? P: 9837079 Pa (b) What is the final pressure if one-tenth of the gas escapes? P 8853371 Pa (c) To what temperature must the tank be cooled to reduce the pressure to 1.00 atm (assuming the gas does not change phase and that there is no leakage during cooling)? T: 200.331 K (d) Does cooling the tank appear to be a practical solution to bring the pressure down and reduce the leak? Assume N, N2. Take into account the values calculatesd in parts (a) through (c). No ! No, that's only partially correct
A steel section of the Alaskan pipeline had a length of 62.1 m and a temperature of 21.0 °C when it was installed. What is its change in length when the temperature drops to a frigid -34.2 °C?
Concrete sidewalks are always laid in sections, with gaps between each section. For example, the figure shows five identical 5.30-m sections, the outer two of which are against immovable walls. The four identical gaps between the sections are provided so that thermal expansion will not create the thermal stress that could lead to cracks. What is the minimum gap width necessary to account for an increase in temperature of 39 °C?
a cup of coffee sits on a table in an insulated mug. to coool the coffee down a ice block is added. the inital mass of coffee in the mug is 90g. the intial temperature of the coffee is 90 degree celsius. the ice block has started to melt and is then put into the coffee. the ice melts and the new temperature of the cofee is 78 degree c and the new mass is 110g. the ice block (final-intital mass) is 20g. what are teh tempeartuare changes for the coffee and ice (started at 0 degree celsius) also if specific heat of water is used for both the coffee and ice waht is the heat energy lost by the coffee and the heat energy gained by the ice after it melted?