A greenhouse has a well insulated concrete floor which is 10m x 10m x 0.1m and...
A greenhouse has a well insulated concrete floor which is 10m x 10m x 0.1m and a density of 2000 kg/m3 . There are also 20 barrels of water in the greenhouse with a total volume of 4m3 . Take the density of water as 1000 kg/m3 . Take the heat capacity of concrete as 900 J / (kgK) and the heat capacity of water as 4120 J / (kgK) .
(a) How much additional energy will the floor store if its temperature increases by sunlight by 10◦ C?
(b) How much additional energy will the water store if its temperature is increased by by sunlight by 10◦ C?
(c) Suppose a heater runs in the greenhouse during the night for 10 hours and it has a power of 1000 Watts. What is the total amount of heat produced by heater during a single night?
(d) Suppose the heater is run by burning coal which has an energy content of 24MJ/ kg (24 × 106 J/kg). How much coal is burned in ten hours? Assume the coal is essentially 100% carbon. (e) How much CO2 does this correspond to? Take the molecular weight of C as 12 and the molecular weight of CO2 as 48.
Homework Answers
Add Answer to:
A greenhouse has a well insulated concrete floor which is 10m x
10m x 0.1m and...
Piece #3 (1 pt): I put an ice cube in my soda. If the ice cube...
Piece #3 (1 pt): I put an ice cube in my soda. If the ice cube gains 1000 J of heat, how much heat does the soda lose? Piece #4 (1 pt): How much energy would be required to raise the temperature of 1.00 kg of water from 20°C to 45°C? Piece #5 (1 pt): How much electrical energy would I need to raise the temperature of 1.00 kg of water from 20°C to 45°C if my heater was only...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
please solve QUESTION 1 239 a) (15 p) We consider a nuclear reactor of power output...
please solve
QUESTION 1 239 a) (15 p) We consider a nuclear reactor of power output P-1000 Megawott (1000 million watts) electric functioning with Plutonium. It is fueled, initially, with 1000 kg of Plutonium. The nuclear material in question is made of Plutonium nuclei, each consisting in 94 protons and 239-94-145 neutrons, which is rd denominated by the symbol 94 Pu For thermodynamical reasons, only 1/3 of the nuclear energy in the form of heat produced by the reactor, can...
Week 4 Process 1: Consider the process below: Water in Combustor Steam Generator Gas In Gas...
Week 4 Process 1: Consider the process below: Water in Combustor Steam Generator Gas In Gas Out Combustor exit Steam Out A methane (CH) and air mixture is burnt in the combustor then the heat is recovered to produce steam. The CHa/air mixture comes in at 25°C and contains 10 kg/h of CH4 and 500 kg/h of air (assume 79% Nitrogen (N2) and 21 % Oxygen (O2)). The final outlet gas leaves at 100 °C. The combustion reaction follows the...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't forget units. 1. A tank with a volume of o.250 m3 is filled with an ideal gas at an abrsolute pressure of 1.01x105 Pa when the temperature is 20.0 C. a) Use the ideal gas law to calculate the number of moles of gas in the tank. b) The temperature of the gas is then raised to 6 C 2. The mass of one...
*) (15 p) We considera muclear reactor of power output P-1000 Megowott 1000 million wot elect,...
*) (15 p) We considera muclear reactor of power output P-1000 Megowott 1000 million wot elect, can with Plutonium. Bifueled, initially with 1000 kg of Plutonium. The nuclear teslim 239 question is made of Plutonium nuclei, each consisting in 94 protons and 239-94145 euro the symbol For thermodynamical reasons, only 1.3 in the form of heat produced by the reactor, can be converted into electricity. How much mass deficit should the nucle fuel of concer delicates if the reactor is...
I asked this before, but the other person got the wrong answer. I tried to solve...
I asked this before, but the
other person got the wrong answer. I tried to solve what they did
wrong to get my answers correct, but to no avail. Please help
me.
(10%) Problem 9: A certain pond absorbs I 910 WIm for a time period of an hour from the sun. Assume that all of this energy is used to raise the temperature of the pond. The pond water fills a hemisphere of radius r 1.75 m and has...
CHAPTER 9 REVIEW QUESTIONS 1How much heat is required to raise the temperature of a 0.04...
CHAPTER 9 REVIEW QUESTIONS 1How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 k/kg-C? 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by a factor of 27 (A) 200J (B) 400 J (C) 600...
please help Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
Piece #3 (1 pt): I put an ice cube in my soda. If the ice cube gains 1000 J of heat, how much heat does the soda lose? Piece #4 (1 pt): How much energy would be required to raise the temperature of 1.00 kg of water from 20°C to 45°C? Piece #5 (1 pt): How much electrical energy would I need to raise the temperature of 1.00 kg of water from 20°C to 45°C if my heater was only...
Heat Loss and Heating Costs of a House Part A A house has well-insulated walls 17.1 cm thick (assume conductivity of air) and area 411 m2, a roof of wood б.бб cm thick and area 279 m2, and uncovered windows 0.626 cm thick and total area 33.4 m2. Assuming that the heat loss is only by conduction, calculate the rate at which heat must be supplied to this house to maintain its temperature at 21.4°C if the outside temperature is...
please solve
QUESTION 1 239 a) (15 p) We consider a nuclear reactor of power output P-1000 Megawott (1000 million watts) electric functioning with Plutonium. It is fueled, initially, with 1000 kg of Plutonium. The nuclear material in question is made of Plutonium nuclei, each consisting in 94 protons and 239-94-145 neutrons, which is rd denominated by the symbol 94 Pu For thermodynamical reasons, only 1/3 of the nuclear energy in the form of heat produced by the reactor, can...
Week 4 Process 1: Consider the process below: Water in Combustor Steam Generator Gas In Gas Out Combustor exit Steam Out A methane (CH) and air mixture is burnt in the combustor then the heat is recovered to produce steam. The CHa/air mixture comes in at 25°C and contains 10 kg/h of CH4 and 500 kg/h of air (assume 79% Nitrogen (N2) and 21 % Oxygen (O2)). The final outlet gas leaves at 100 °C. The combustion reaction follows the...
Lol 0-15 Show complete solutions including formulas and express all answers to three sig figures. Don't forget units. 1. A tank with a volume of o.250 m3 is filled with an ideal gas at an abrsolute pressure of 1.01x105 Pa when the temperature is 20.0 C. a) Use the ideal gas law to calculate the number of moles of gas in the tank. b) The temperature of the gas is then raised to 6 C 2. The mass of one...
*) (15 p) We considera muclear reactor of power output P-1000 Megowott 1000 million wot elect, can with Plutonium. Bifueled, initially with 1000 kg of Plutonium. The nuclear teslim 239 question is made of Plutonium nuclei, each consisting in 94 protons and 239-94145 euro the symbol For thermodynamical reasons, only 1.3 in the form of heat produced by the reactor, can be converted into electricity. How much mass deficit should the nucle fuel of concer delicates if the reactor is...
I asked this before, but the
other person got the wrong answer. I tried to solve what they did
wrong to get my answers correct, but to no avail. Please help
me.
(10%) Problem 9: A certain pond absorbs I 910 WIm for a time period of an hour from the sun. Assume that all of this energy is used to raise the temperature of the pond. The pond water fills a hemisphere of radius r 1.75 m and has...
CHAPTER 9 REVIEW QUESTIONS 1How much heat is required to raise the temperature of a 0.04 kg stainless steel spoon from 20°C to 50°C if the specific heat of stainless steel is 0.50 k/kg-C? 5. An ideal gas is confined to a container whose volume is fixed. If the container holds n moles of gas, by what factor will the pressure increase if the absolute temperature is increased by a factor of 27 (A) 200J (B) 400 J (C) 600...
please help
Question 23 (1 point) Which observation is NOT explained by the intermediate disturbance hypothesis In the interior of an old forest a low number of K-type species dominate the community Species evenness is larger when disturbances are extremely frequent Species richness increases immediately after a disturbance such as a fire, but may decrease later In beach dune environments, a low number of r-type species dominate the community Question 24 (1 point) Some birds follow moving swarms of army...
Most questions answered within 3 hours.
-
a bottle cap manufacturer with four machines and six operators
wants to see if variation in...
asked 49 minutes ago -
State Farm Insurance studies show that in Colorado, 55% of the
auto insurance claims submitted for...
asked 1 hour ago -
Complete the following reactions which form ethers (A
and B) and cyclic ethers (C-E) as major...
asked 1 hour ago -
in a perfectly elastic collision what is the velocity of ball A
if the original direction...
asked 2 hours ago -
PLEASE ANSWER ALL
1) The pressure of the atmosphere decreases with increasing
altitude in the
Choose...
asked 2 hours ago -
A simple random sample of 25,000 individuals are surveyed in
order to determine the prevalence of...
asked 2 hours ago -
People who do very detailed work close up, such as jewelers,
often can see objects clearly...
asked 2 hours ago -
14 years ago, Blue Lake Corp. issued 30 year to maturity
zero-coupon bonds with a par...
asked 2 hours ago -
Warnerwoods Company uses a perpetual inventory system. It
entered into the following purchases and sales transactions...
asked 2 hours ago -
Equivalent Units of Conversion Costs
The Rolling Department of Oak Ridge Steel Company had 6,842 tons...
asked 2 hours ago -
what does the concept of "core competence" mean? why
is this concept important? How would you...
asked 2 hours ago -
__________ is a type of visualization that is linked to strategy
and used within a formal...
asked 2 hours ago