Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 37°C, the, the skin temperature is 35°C, thickness of the tissues between averages 1 cm, and the surface area is 1.6 m². Assume thermal conductivity of the tissue is 0.2 W/m/K) ○ A. 46.0 W O B. 96.4 W ○ C. 64 W ○ D. It cannot be calculated as the type of dress worn is unknown. ○ E. -90 W

Review | Seals may cool themselves by using thermal windows, patches on their bodies with much higher than average surface temperature. Suppose a seal has a 0.030 m? thermal window at a temperature of 30° C.(Figure 1) Part A If the seal's surroundings are a frosty -18 °C, what is the net rate of energy loss by radiation? Assume an emissivity equal to that of a human. Express your answer in watts. ? Qnet W At Submit Request Answer Figure < 1 of 1 < Return to Assignment Provide Feedback 33.0 C 30 25 20 15 62 min 1.5°C

A 0.0600-kg ice cube at -30.0°C is placed in 0.450 kg of 35.0°C water in a very well-insulated container. What is the final temperature in degrees Celsius? °C t.

.A 3.00-kg copper rod is 45.0 cm long at 24.8°C. If 45 000 J are transferred to the rod by heat, what is its change in = 387 J/kg °C and acopper -= 17.0 × 10-6/°C. ength? Ccopper a. 34.4 cm b. 0.0297 cm c. 0.133 cm d. 0.0445 cm e. More information is needed.

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1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]

A solid cylindrical bar conducts heat at a rate of 25 W from a hot to a cold reservoir under steady state conditions. If both the length and the diameter of this bar are doubled, the rate at which it will conduct heat between these reservoirs will be O 12.5 W. O 200 W. O 100 W. O 25 W. O 50 W.

The density of ice and water are 917 kg/m³ and 1000 kg/m³. The latent heat for the transition between ice and water is 334 kJ/kg. Calculate the slope of the tangent of the coexistence curve of ice and water at T = 253 K. Select one: dP O a. dT O b. O c. O d. dP dT dP dT dP dT = -165 atm/K = -168 Pa/K = - 175 Pa/K = -143 atm/K

23.0 g of copper pellets are removed from a 300 degree celsius oven and immediately dropped i to a 80.0 mal of water at 20.0 celsius in an insulated cup.  What will the new water temperature be?    Please help! I can't figure this question out.

A 60.0-kg runner expends 359 W of power while running a marathon. Assuming 12.5% of the energy is delivered to the muscle tissue and that the excess energy is removed from the body by sweating, determine the volume of bodily fluid (assume it is water) lost per hour. (At 37.0°C the latent heat of vaporization of water is 2.41 ✕ 106 J/kg.) cm3