Your slow cooker has several heating settings. It has two separate heating coils. The coils can be used independently, wired in parallel, or wired in series. One coil has a resistance of 65 Q and the other 82 Q The slow cooker is plugged into the wall outlet, which provides 120 V rms ac voltage. Assume your slow cooker is well insulated. You're reheating 1.9 kg of frozen stew- you just drop it in and turn the slow cooker on. The stew starts at -11 C straight from the freezer, and you want to heat it to 68 C. Assume the stew is essentially water. (specific heat water = 4186 J/kg. C, specific heat ice 2100 J/kg.°C, L = 33.5x10 J/kg; L, = 22.6x105 J/kg) a How much energy is needed to warm the stew, in kJ? (The answer blank is for this part.) b) Which connection, series or parallel, do you expect the cooker to use for the lowest heat setting, and why? c) Which connection, series or parallel, do you expect the cooker to use for the highest heat setting, and why? d) Calculate the power output for the lowest and highest heat settings. e) How long will it take to heat the stew for the lowest and highest heat settings?

Your slow cooker has several heating settings. It has two separate heating coils. The coils can be used independently, wired in parallel, or wired in series. One coil has a resistance of 65 Q and the other 82 Q The slow cooker is plugged into the wall outlet, which provides 120 V rms ac voltage. Assume your slow cooker is well insulated. You're reheating 1.9 kg of frozen stew- you just drop it in and turn the slow cooker on. The stew starts at -11 C straight from the freezer, and you want to heat it to 68 C. Assume the stew is essentially water. (specific heat water = 4186 J/kg. C, specific heat ice 2100 J/kg.°C, L = 33.5x10 J/kg; L, = 22.6x105 J/kg) a How much energy is needed to warm the stew, in kJ? (The answer blank is for this part.) b) Which connection, series or parallel, do you expect the cooker to use for the lowest heat setting, and why? c) Which connection, series or parallel, do you expect the cooker to use for the highest heat setting, and why? d) Calculate the power output for the lowest and highest heat settings. e) How long will it take to heat the stew for the lowest and highest heat settings?

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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