#5. As part of a new seal hunting stategy, on a balmy –5.00 °C day I drill a circular holein the sea ice that has a radius of 0.402 m. I take the drilled block of sea ice and leave it outon the ice. When I come back later that evening the temperature has dropped to –29.0 °C.What will be the area of the top of the block of sea ice (ignoring any new ice formation)?Note that the coefficent of linear expansion for sea ice is 45.0 × 10–6

Write the expression of the final area. ∆A=2αAi∆T

Answered: #5. As part of a new seal hunting…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Meltdown: A certain metal has a melting point of 724 °C, and a heat of fusion (latent heat) of 77.7 J/g. The specific heat of the metal in its solid form is 0.359 J/g. K, its specific heat in its molten liquid form is 0.693 J/g K, and its density is 6.85 g/cm³. A 719 g sample of the metal is placed in a sealed, thermally insulated vessel with a heating element. If the sample is initially a solid at room temperature (20 ° C), how much heat is required melt the sample and bring it to a final temperature of 999 °C?
2. A lead rod is heated from 30 °C to 50 °C. After the temperature is raised, the rod lengthens 0.00013 m. What is the initial length of the lead rod? The coefficient of linear expansion for lead is 29 x 106/°C.
16. One January morning in 1943, a warm chinook wind rapidly raised the temperature in Spearfish, South Dakota, from below freezing to +12.0 °C. As the chinook died away, the temperature fell to –20.0 °C in 27.0 minutes. Suppose that a 19-m aluminum flagpole were subjected to this temperature change. Find the average speed at which its height would decrease, assuming the flagpole responded instantaneously to the changing temperature.
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You happen to come across a piece of metal that has a density of p = 7.43 g/cm³ when the temperature is To = 45.0 °C. If the metal is cooled to a temperature of T = 0.00 °C, does the density change? No, because as the volume changes so does the mass. No, density does not depend on temperature. Yes, since the metal contracts and the mass is constant, the density will increase. Yes, the density will decrease since the volume changes. Calculate the density of the piece of metal at this temperature, p1. The coefficient of volume expansion for this piece of metal is ß = 8.43 x 10-s 1°°C.
1. On a sunny day, Emma is cutting branches from a tree in her yard. At midday, she takes a break, leaving a pile of branches and leaves on the ground. When she returns and gathers the branches, she notices the leaves are wilted and crisp. Which of the following correctly describes what happened to the leaves? A. The trees had not received water for a long time before being cut. B. The warm temperature caused moisture to evaporate from the leaves. C. The nutrients cannot reach the leaves if the tree's branches are not upright. D. The leaves had been covered in frost the week before, but had not wilted until now. Explanation:
You happen to come across a piece of metal that has a density of p 8.12 g/cm3 when the temperature is To = 42.5 °C. If the metal is cooled to a temperature of T1 0.00 °C, does the density change? Yes, the density will decrease since the volume changes. Yes, since the metal contracts and the mass is constant, the density will increase. No, because as the volume changes so does the mass. No, density does not depend on temperature. Calculate the density of the piece of metal at this temperature, P1. The coefficient of volume expansion for this piece of metal is B = 7.62 x 10-5 1/°C. -0.0263 Pi = g/cm3 Incorrect
1. People buying food in sealed bags at high elevation often notice that the bags are puffed up because the air inside has expanded. A bag of pretzels was packed at a pressure of 1.00 atm and a temperature of 22.0 C. When opened at a summer picnic in Santa Fe, New Mexico, at a temperature of 32.0 C, the volume of air in the bag is 1.13 times its original volume. What is the pressure of the air P Santa Fe? = 0.079 Santa Fe X atm
Q5: A hot-air balloon has a volume of 1100 m³. The density of air at 20 °C is 1.205 kg/m³. The density of hot air inside the balloon at a temperature of 100 °C is 0.946 kg/m³. How much weight can the hot-air balloon lift ?(including the balloon itself)
2. A thermometer is removed from a room where the temperature is 70°F and is taken outside, where the air temperature is 10°F. After half a minute the thermometer reads 50°F. What is the reading of the thermometer at t = 1 minute? How long will it take for the thermometer to reach 15°F?
14. The sun's temperature decreases steadily as the distance from its innermost regions increases. The sole exception to this is in the outermost part of the sun's atmosphere. This region, called the corona, consists of thin gases that are heated by the sun's magnetic field. As a result, the corona has an average temperature of about 1.0 x 10° K. What is this temperature in degrees Celsius? Must give answer then also | give answer in significant fig format

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