One suggested treatment for aperson who has suffered a stroke is immersion in an ice-water bath at0°C to lower the body temperature, which prevents damage to the brain.In one set of tests, patients were cooled until their internal temperaturereached 32.0°C. To treat a 70.0 kg patient, what is the minimum amountof ice (at 0°C) you need in the bath so that its temperature remains at0°C? The specific heat of the human body is 3480 J/kg . C°, and recallthat normal body temperature is 37.0°C.

One suggested treatment for aperson who has suffered a stroke is immersion in an ice-water bath at0°C to lower the body temperature, which prevents damage to the brain.In one set of tests, patients were cooled until their internal temperaturereached 32.0°C. To treat a 70.0 kg patient, what is the minimum amountof ice (at 0°C) you need in the bath so that its temperature remains at0°C? The specific heat of the human body is 3480 J/kg . C°, and recallthat normal body temperature is 37.0°C.

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In a physics lab, students are conducting an experiment to learn about the heat capacity of different materials. The first group is instructed to add a number of 1.50 g pellets made of lead, at a temperature of 92.0°C, to 305 g of water at 16.0°C. A second group is given the same number of 1.50 g pellets as the first group, but these are now aluminum pellets. Assume that no heat is lost to or gained from the surroundings for either group. (a) If the final equilibrium temperature of the lead pellets and water is 25.0°C, how many whole pellets did the first group use in the experiment? The specific heat of lead is 0.0305 kcal/(kg · °C). pellets (b) Will the final equilibrium temperature for the second group be higher, lower, or the same as for the first group? The specific heat of aluminum is 0.215 kcal/(kg · °C). O higher O lower O the same (c) What is the equilibrium temperature of the aluminum and water mixture for the second group? °C
The frames for a pair of eyeglasses have a radius of 2.14 cm at 20.0°C. Lenses with radius of 2.15 cm have to be inserted into these frames. To what temperature must the technician heat the frames to accommodate the lenses? The frames are made of a material whose thermal expansion coefficient is 1.30 10-4/°C.
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Suppose a walrus transfers energy by conduction through its blubber at the rate of 125 W when immersed in -1.25°C water. The walrus’s internal core temperature is 37.0°C, and it has a surface area of 1.85 m2. Chart attached. What is the average thickness of its blubber, in centimeters, which has the conductivity of fatty tissue?
Estimate the temperature change you expect in this air. Let the volume of your room be 38 m3. Heat capacity of air is 1000 J/kg⋅∘C.
A homeowner is unhappy with her heating costs. One wall of her house is 4 meters tall and 8 meters wide and has no windows, and it is made of brick and mortar with a thermal conductivity of 1.0 W m K . It is 40 cm thick. The house is heated to a temperature of 20 ◦C inside. (a) What is the rate of heat loss through the wall on a day when it is 0◦C outside? (b) A layer of rock mineral wool, which has a thermal conductivity of 0.032 W m K is to be installed on the interior surface of the brick wall. How thick should the layer be to lower the rate of heat transfer through this wall to half its original value? (c) If the rock mineral wool is instead installed on the outer surface, is the thickness required the same?
A steel rod 30.0 m long, installed when the temperature was 10°C, is in a bridge that heats up to 40oC on a hot summer day. Steel's coefficient of linear expansion is 1.2 × 10-5 K-1. The bridge is built so the rod has an expansion space of 5 cm. Is this enough space? What is the increase in the length of the rod, in mm?