Question

In: Physics

A cubical piece of heat-shield-tile from the space shuttle measures 0.09 m on a side and...

A cubical piece of heat-shield-tile from the space shuttle measures 0.09 m on a side and has a thernal conductivity of 0.065 J/(s m C°). The outer surface of the tile is heated to a temperature of 1,219°C, while the inner surface is maintained at a temperature of 24°C.

(a) How much heat flows from the outer to the inner surface of the tile in 7.8 minutes?

Number: __________ Units: __________

(b) If this amount of heat were transferred to 3.2 litres (3.3 kg) of liquid water, by how many Celsius degrees would the temperature of the water rise?

Take c_water = 4186 J/kg

Number: __________ Units: __________

Expert Solution

Solution of (a):

Thermal conductivity of cubical piece
Side length of the of cubical piece
Area of cubical piece
Inner temperature
Outer temperature
Time taken to flow the temperature
Specific heat of water
Mass of water

Heat transfer is given by:

Solution of (b):

The heat

Therefore, the temperature of water rises by if heat is transferred to of water.

genius_generous answered 1 year ago

A cubical block of wood 0.100 m on a side and with density of 550 kg/m3...

A cubical block of wood 0.100 m on a side and with density of 550 kg/m3 floats in a jar of water. Oil with a density of 750 kg/m3 is poured on the water until the top of the oil layer is 0.035 m below the top of the block. a) How deep is the oil layer? b) What is the gauge pressure at the block’s lower face?

A uniform cubical crate is 0.575 m on each side and weighs 900 N. It rests...

A uniform cubical crate is 0.575 m on each side and weighs 900 N. It rests on the floor with one edge against a very small, fixed obstruction. At what height above the floor must a horizontal force of 625.0 N be applied to the crate to just tip it?

A small cubical room 5.0 m on a side has all six surfaces of poured concrete....

A small cubical room 5.0 m on a side has all six surfaces of poured concrete. One wall has a wooden door 2.25 m × 0.75 m. (a) What is the reverberation time of this room at 2048 Hz? (b) Six wooden chairs are put into the room and the reverberation time at 2048 Hz changes to 5.0 s. What is the absorption, a, of one chair? (c) What the total absorption, a, of the whole room should be in...

On a space shuttle, LiOH is used to absorb exhaled CO2 from breathing air to form...

On a space shuttle, LiOH is used to absorb exhaled CO2 from breathing air to form LiHCO3. What is the percent yield of the reaction if 25.0 g of LiOH gives 58.1 g of LiHCO3? LiOH(s) + CO2(g) → LiHCO3(s) Hint: Calculate the Theoretical Yield first, then compute the % yield. molar mass LiOH = 23.95 g/mol molar mass LiHCO3 = 67.96 g/mol

A shell-and-tube heat exchanger is to used to heat water (in the tube side) from 30...

A shell-and-tube heat exchanger is to used to heat water (in the tube side) from 30 deg C to 40 deg C at a mass flow rate of 4 kg/s. The fluid used for heating (shell side) is water entering at 90 deg C with a mass flow rate of 2 kg/s. A 1-2 STHE is used and the overall heat transfer coefficient based on the inside area is 1390 W/m2-K. The tubes are 1.875 in diameter (inside) and require...

The Space Shuttle is covered with special tiles which prevent it from burning up upon its return to the atmosphere.

The Space Shuttle is covered with special tiles which prevent it from burning up upon its return to the atmosphere. These tiles are made from Select one: a. CMC-type material b. PMC-type material c. MMC-type material d. Ferrous-type material

A refrigerator removes heat from a refrigerated space at -6°C and rejects it to an environment...

A refrigerator removes heat from a refrigerated space at -6°C and rejects it to an environment at 30°C. If the temperature in the cooled area is reduced to - 18°C, determine the minimum percentage increase in the work required for the same amount of energy from which the Carnot refrigerator is removed. a. 53 b. 33 c. 93 d. 13 e. 73

Calculate the necessary heat to take an ice cube (side length = 2.54cm) from -40.0degreesC to135.0...

Calculate the necessary heat to take an ice cube (side length = 2.54cm) from -40.0degreesC to135.0 degrees C. Calculate the heat necessary to take the ice to melting point.

A refrigeration cycle absorbs 20,000 kJ/h of heat from a space maintained at -45oC and rejects...

A refrigeration cycle absorbs 20,000 kJ/h of heat from a space maintained at -45oC and rejects heat to the surrounding air at 30oC. i. Determine the actual power input to the refrigeration cycle if the coefficient of performance (COP) of the refrigeration cycle is 25% of that of a reversible refrigerating cycle operating between the same two temperature reservoirs (kW). ii. Determine the minimum work input to the refrigeration cycle (kW). iii. Will the heat rejected to the surrounding by...

Estimate the footprint for a shell-and-tube heat exchanger from the following design data: Area = 145 m Hot side temperatures: in at 300°C, out at 195°C

Estimate the footprint for a shell-and-tube heat exchanger from the following design data:Area = 145 mHot side temperatures: in at 300°C, out at 195°CCold side temperatures: bfw at 105°C, mps at 184°CUse 12 ft, 1-in OD tubes on a 1-1/4-in square pitch, use a single shell-and tube pass because of change of phase on shell sideUse a vapor space above boiling liquid = 3 times liquid volume