An oven may be regarded as a cube, each side 1.2m long. The oven stands on...

An oven may be regarded as a cube, each side 1.2m long. The oven stands on thin legs and the heat transfer through each of the six faces is identical. The walls and doors are all made of a stainless steel lining (thermal conductivity 20W/mK) 2mm thick, a layer 75mm thick of insulating material (thermal conductivity 0.25W/mK) and a mild steel outer sheet (thermal conductivity 48.5W/mK) 3mm thick. If the inner wall temperature is 400^oC and the outer surface temperature is 100^oC calculate the rate of heat loss from the oven. Estimate the heat transfer coefficient between the oven and the surrounding air at 30^oC

[8.63kW, 14.3W/m²K]

Expert Solution

samet mamat answered 2 years ago

Benzene may be regarded as a two-dimensional box of side about 3.5 angstroms and containing six...

Benzene may be regarded as a two-dimensional box of side about 3.5 angstroms and containing six pi electrons. Recall than any state can hold a maximum of two electrons. What wavelength of light would be required to promote an electron from the highest occupied molecular orbital (HOMO) to the lowest unoccupied molecular orbital (LUMO)?

A lead cube is cut that is 1.500 cm on each side. The density of lead...

A lead cube is cut that is 1.500 cm on each side. The density of lead is 11.35 g/cc. How many atoms of lead are in the cube if only 60% of the cube is occupied by lead atoms? Use "E" for scientific notation. A copper atom has a diameter of 128pm. How many centimeters is a line containing exactly 1.0 moles of copper atoms sequentially arranged? Use "E" for scientific notation. Calculate the mass ( in grames) of cobalt...

Prove (for example, by calculating each side) (a) Q[ √ 2, cube root(2)] : Q =...

Prove (for example, by calculating each side) (a) Q[ √ 2, cube root(2)] : Q = [Q[ √ 2] : Q] · [Q[ cube root(2)] : Q] (b) Q[ √ 2, fourth root (2)] : Q not equal to [Q[ √ 2] : Q] · [Q[ fourth root (2)] : Q]

3. A cube of Brass (B = 70 GPa) measuring 1.0 m on each side is...

3. A cube of Brass (B = 70 GPa) measuring 1.0 m on each side is submerged under water. It is lowerd to a depth where a force "F" is acting perpendicularly into each side, reduces the cube's volume by 1.8 %. (a) Calculate the size of this force. 2.A researcher examines a piece of fresh human cartilage, with an area of 1.9 cm2. She observes that when subjected to a tensile force of 194 N it stretches by 4.8...

A cube of wood which is 0.5 m on each side is held completely submerged under seawater.

A cube of wood which is 0.5 m on each side is held completely submerged under seawater. Calculate the buoyant force (B) acting on this block, and what quantity of force is required to keep it submerged? Psw = 1.030 kg/m3

1. A cube (length of each side: 10 cm), made from some unknown material, floats on...

1. A cube (length of each side: 10 cm), made from some unknown material, floats on the surface of the ocean. If 72% of the total volume of this cube is underwater, determine: a) the total mass of water displaced by the cube b) the buoyant force acting on the cube c) the total mass of the object d) the density of the object

A cube 22 cm on each side contains 2.5 g of helium at 20∘C. 1100 J...

A cube 22 cm on each side contains 2.5 g of helium at 20∘C. 1100 J of heat energy are transferred to this gas. a) What is the final pressure if the process is at constant volume? b) What is the final volume if the process is at constant pressure?

Problem 19.54 A cube 21 cm on each side contains 3.2 g of helium at 20∘C....

Problem 19.54 A cube 21 cm on each side contains 3.2 g of helium at 20∘C. 1200 J of heat energy are transferred to this gas. Part A What is the final pressure if the process is at constant volume? Express your answer to two significant figures and include the appropriate units. Part B What is the final volume if the process is at constant pressure? Express your answer to two significant figures and include the appropriate units.

An expandable cube, initially 17 cm on each side contains 3.9 g of helium at 20∘C....

An expandable cube, initially 17 cm on each side contains 3.9 g of helium at 20∘C. 1400 J of heat energy are transferred to this gas. a. What is the final pressure if the process is at constant volume? b. What is the final volume if the process is at constant pressure?

A cube 23 cm on each side contains 3.7 g of helium at 20∘C. 1000 J...

A cube 23 cm on each side contains 3.7 g of helium at 20∘C. 1000 J of heat energy are transferred to this gas. A) What is the final pressure if the process is at constant volume? B)What is the final volume if the process is at constant pressure?

Question