Consider two finned surfaces that are identical except that the fins on the first surface are formed by casting or extrusion, whereas they are attached to the second surface afterwards by welding or tight fitting. For which case do you think the fins will provide greater enhancement in heat transfer? Explain.

Q: The temperature of a 0.23-kg aluminum pot containing 2.7 kg of water is raised from 36°C to the…

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Q: Suppose you stand with one foot on ceramic flooring and one foot on a wool carpet, making contact…

A: A) Write the expression for the rate of heat transfer through the ceramic. Qt=kA(T2−T1)dQt=(0.84…

Q: Consider two different construction materials with the following R values: R = 2R and R = R. If the…

A: From the expression of the R-value, determine the coefficient of thermal conductivity of both the…

Q: Help.... Its wintertime and you are in need of portable electrical heater for your room and you are…

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Q: Two metal rods, one silver and the other copper, are both attached to a steam chamber as shown in…

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Q: The specific heat of copper is roughly three times as great as the specific heat of gold. Which of…

A: The specific heat capacity of a substance is the amount of energy required to raise the temperature…

Q: The loss of body heat via convection is described by which statement? The body gives off waves of…

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Q: If you pour 0.0100 kg of 20.0°C  water onto a 1.20-kg block which is initially at  −15.0°C. and the…

A: As per the given data, Mass of the water (mw) = 0.01 kg; Initial temperature of water (Tw) = 200 C =…

Q: mass of 6.00 kg. Consider that the melting temperature of aluminum is 660 ° C and that its specific…

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Q: As a physicist, you have a material which has a molar mass of 0.040 kg/mol. You put heat into a…

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Q: The apparatus shown in Figure P11.12 was used by Joule to measure the mechanical equivalent of heat.…

A: Given,

Q: The apparatus shown in Figure P11.10 was used by Joule to measure the mechanical equivalent of heat.…

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Q: After driving a car for a long time, you can feel how warm the engine is when you place your hand on…

A: After driving a car for a long time, the hood becomes warm due to the conduction of heat from the…

Q: A 47.5-kg block of ice at 0 °C is sliding on a horizontal surface. The initial speed of the ice is…

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Q: Two isolated systems with different temperatures are connected via a long square Steel rod. The…

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Q: Two walls are made of the same type of concrete and have the same temperature difference between…

A: No. of walls = 2  type of concrete = same  temp. differnce is same in both inside and outside of…

Q: The primary and secondary mirrors of a space telescope are assembled using zerodur spacers in an…

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Q: A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.5 m × 2.2 m. On a certain day,…

A: The thickness of the windowpane is 0.62 cm. The dimension of the windowpane is 1.5 m×2.2 m. The…

Q: 11. A 42.0-kg block of ice at 0°C is sliding on a horizontal surface. The initial speed of the ice…

A: Mass m = 42 kg Initial speed u = 7.7 m / s Final speed v = 3.3 m / s

Q: An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same…

A: Q =mc(∆T) =(0.9)(4.186)(25-0) = 94.185 kJ = 94185 J

Q: Two metal rods, one silver and the other copper, are both attached to a steam chamber as shown in…

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