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two sheets of copper of area 1.50 m2 are separated by 10.0 cm. what is the rate of transfer of heat by conduction from the warm sheet (50°c) to the cold sheet (−10°c). what is the rate of loss of heat?

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Related questions

Question 1

_________ is heat exchange brought about by direct contact with a hot surface.

Select one: a. Conduction b. Convection c. Radiation

Question 2

____ is a very good conductor of heat.

Select one: a. Aluminum b. Stainless steel c. Pyrex d. Air

Question 3 Containers used for baking often are made of poor heat conductors.

Select one: True False

Question 4 Heat transfer within foods is influenced by __________.

Select one: a. moisture b. density c. initial temperature d. all of the choices

Question 5 __________ is heat transfer by a fluid.

Select one: a. Conduction b. Convection c. Radiation

Question 6 ___________ is a method of heat transfer that does not require direct contact.

Select one: a. Conduction b. Convection c. Radiation

Question 7

The amount of heat radiated by a hot object increases greatly as the object temperature increases.

Select one: True or False

Question 8

Broiling transfers heat by radiation while grilling does not.

Select one: True or False

Question 9

Microwaves have their greatest impact on ______ molecules.

Select one: a. protein b. carbohydrate c. fat d. water

Question 10

Shape and materials influence how pots and pans transfer heat.

Select one: True or False

Question 11

___________ is an excellent conductor of heat.

Select one: a. Copper b. Aluminum c. Stainless steel d. Ceramic

Question 12

While durable and relatively inexpensive, thin ________ can develop hot spots.

Select one: a. Copper b. Aluminum c. Stainless steel d. Ceramic

Question 13

_________ can be coated with ceramics or polymerized vegetable oil to prevent discoloration.

Select one: a. Copper b. Aluminum c. Stainless steel d. Iron

Question 14 Pans made of ________ are good at transferring heat but may warp or discolor.

Select one: a. Cast iron b. Aluminum c. Stainless steel d. Ceramic

Please answer all questions, thank you!

A 1.9 kg block of iron at 23 ∘C is rapidly heated by a torch such that 17 kJ is transferred to it. What temperature would the block of iron reach assuming the complete transfer of heat and no loss to the surroundings? If the same amount of heat was quickly transferred to a 890 g pellet of copper at 22 ∘C, what temperature would it reach before losing heat to the surroundings?

Express the final temperatures of the iron and copper in ∘C to two significant figures separated by a comma.

A 21 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is subjected to a convective heat transfer coefficient of h = 7.1 W/m2. K. Calculate the heat loss by convection per metre length of the pipe when the external surface temperature is 84 oC and the surroundings are at 24 oC.

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