Problem 5 Entropy changes A 1000kg ice sculpture of the great physicist Lord Kelvin is lost overboard a pleasure boat floating on a large lake (Tiake= 27 °C). The ice is at a temperature of 0°C. By the time the sculpture is recovered, some of the ice has melted so that only 900kg of ice remains. For this entire problem, assume that the water resulting from the melted ice stays at 0 °C and does not have sufficient time to warm up to 27 °C. You may approximate the heat of fusion for water as Lf= 300 kJ/kg. a) During this time, how much heat, Q, was exchanged between the lake and the sculpture? Clearly indicate whether heat was added or removed from the ice. b) What is the change in entropy of the sculpture? (Consider the water melted from the ice as part of the sculpture.) c) How much has the entropy of the lake (not including the sculpture) changed during this time? d) What is the net change of the entropy of the whole universe due to this process? Please explicitly state whether this is positive, negative or zero.

I need these three parts answered, if you are unable to answer all three parts please leave it for another tutor to answer, thank you.

1) A low-friction cart is placed between two identical springs attached to rigid walls. If you push the cart against one of the springs and release it, it will continue to move back and forth between the springs. www Draw a force-time graph showing the sum of the horizontal forces exerted on the cart as it moves back and force between the springs. Scientific Abilities Is able to construct a force diagram Missing No representation is constructed. Inadequate FD is constructed but contains major errors such as incorrect mislabeled or not labeled force vectors, length of vectors, wrong direction, extra incorrect vectors are added, or vectors are missing. Needs Improvement FD contains no errors in vectors but lacks a key feature such as labels of forces with two subscripts or vectors are not drawn from single point, or axes are missing. Adequate The diagram contains no errors and each force is labeled so that it is clearly understood what each force represents. Explain whether or not this…

I have to chart this in excel and show my work if possible. Thank you in advance.