Ek=400JPWiz said:The lead sphere had kinetic energy before collision, but none afterwards. How much kinetic energy was this? What form has this energy been converted to?
Set up an equation with the total initial and final energies set equal to each other.
MaiteB said:Next should I write mcT=Ek? How can I find the difference in ice temperature?
Hmmm, I think the initial temperature of the ice does matter. The question does not specify that the ice is at 0 degrees Celsius. If it is at any other lower temperature, some of the energy from the 400J would bring it to the melting point and the remaining would convert the ice to water (the latent heat of fusion), so the initial temperature will clearly affect the mass of ice that melts. I think the question is incomplete.CWatters said:The ice doesn't change temperature. It just turns to water at the same temperature.
Is that the right equation in this situation?
The answer is 16.5 g, if it helpsCWatters said:You are correct. I didn't notice the initial temperature of the ice wasn't specified.
I agree the question is incomplete. You can't solve it unless you assume the ice is at zero.
The sphere with its energyinsightful said:So, what are all the sources of energy available to melt the ice?
The mass of ice that melts during the hit can be found by using the equation Q = m * L, where Q is the amount of heat absorbed, m is the mass of ice, and L is the latent heat of fusion for water. By measuring the amount of heat absorbed during the hit and knowing the latent heat of fusion for ice, the mass of ice can be calculated.
The amount of ice that melts during the hit can be affected by various factors including the temperature and velocity of the object hitting the ice, the duration of the hit, and the surface area of the ice being hit. Additionally, the type of ice (e.g. solid or crushed) and the composition of the object (e.g. metal or plastic) can also impact the amount of ice that melts.
While the exact amount of ice that will melt during a hit cannot be predicted with 100% accuracy, it can be estimated by considering the factors mentioned above. By conducting experiments and collecting data, scientists can develop models to predict the amount of ice that will melt during a hit based on the specific circumstances.
The mass of ice that melts during the hit can have an impact on the surrounding environment. The sudden release of cold water from the melted ice can affect the temperature and ecosystem of the surrounding water. It can also contribute to changes in sea levels and ocean currents.
The mass of ice that melts during the hit is not directly related to global warming. However, the melting of ice in general (whether it is from a hit or due to rising temperatures) can contribute to the overall melting of glaciers and ice sheets, which can lead to rising sea levels and other environmental impacts associated with global warming.