If I have an unknown substance of mass m=2.54kg which requires Q= 3430J of heat to change its temperature by ten degrees Kelvin, what is this substances specific heat?
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A: Given that Change in temperature is ∆θ = 2°C Mass m = 80 kg Specific heat capacity C =4186 J/kg°c
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A: Given: The amount of energy added is 700 kJ. The latent heat of vaporisation is 600 g. The initial…
Q: If you add 700 kJ of heat to 600 g of water at 60.0°C, how much water will be left in the container?…
A: Given data: Total heat = 700 kJ = 700,000 J Mass (m) = 600 g = 0.600 kg Initial temperature (T0) =…
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Q: A closed box is filled with dry ice at a temperature of -89.2 C, while the outside temperature is…
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Q: What total amount of heat must be removed to drop the wholebody temperature of a typical 65-kg…
A: mass, m = 65 kg increase in temperature, T = 1 °C specific heat, c = 3.5 x 103 J/kg °C
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A: K= 0.80 W/m ∙ C° A= (2.7×2.4) = 6.48 m2 ∆T = 19-4 = 15 x= 0.009 m
Q: 700 cm X 1360 cm house is built on a 13.2 cm thick
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A: Given data: Initial temperature = 25°C Mass of water (m) = 456 g = 0.456 kg Specific heat of…
Q: Let us represent the body's surface tissue as layer of thickness X1=5 cm which has a thermal…
A: The rate of heat loss is given by H =KA(T'- T)d where, K is the coefficient of thermal…
Q: Let us represent the body's surface tissue as layer of thickness X1=5 cm which has a thermal…
A: The rate of heat loss is given by H = K A (T' - T)x where, K is the coefficient of thermal…
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Q: Question 16 A granite wall has a thickness of 78 cm, an area of 7.33 m by 2.85 m and a thermal…
A: Given:Thickness of granite wall, L = 78 cmArea of granite wall, A = 7.33×2.85 = 20.8905 m2Thermal…
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A: The expression from heat transfer,
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A: Given data: Mass (m) = 0.02 kg Increase in temperature (ΔT) = 1°C Specific heat capacity of water…
Q: What will be the final temperature if 4.0 x 104 J of heat is transferred to a 1.5kg block of…
A: Given, Mass, m=1.5 kg Initial temperature, T1=15°C Specific heat capacity of aluminium, c=9.0×102…
Q: How much heat must be removed from a 300-g block of copper to lower its temperature from 150°C to…
A: Given: Mass of block of copper is m=300g. Specific heat capacity of copperc is 0.093 cal/g·°C.…
Q: A 2.80-kg steel ball at 24.7°C is dropped from a height of 15.4 m into an insulated container with…
A: mass of steel ball ms= 2.80kg temperature of steel ball is Ts= 24.7o C height of the ball h = 15.4 m…
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Q: A granite wall has a thickness of 77.2 cm, an area of 6.48 m by 2.67 m and a thermal conductivity of…
A: Heat transfer in time t is given by dQdt=-KAdTdxdQ =-KAdTdxdtQ=-kA∆Tthickness×tk=thermal…
Q: A wood slab with a thickness of 0.05 m is subjected to a heat flux of 40 W/m2. The left and right…
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Q: A 1020 cm X 1120 cm house is built on a 15.2 cm thick concrete slab of thermal conductivity 0.64…
A: Given information: The area of the base of the house, A=1020 cm×1120 cm=10.20 m×11.20 m=114.24 m2…
Q: A human body has a temperature of 300 If its total surface area is 1.2 m2, what is the net rate of…
A: Given, Temperature of the body, Tb = 30 °Ctotal surface area of body, A = 1.2 m2surrounding…
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Q: What is the specific heat of an 800g unknown substance whose temperature changes by 78◦C after…
A: Given data: Mass of substance is, m=800 g. Change in temperature is, ∆T=78∘C. Amount of heat…
Q: You wish to heat 20 kg of water from 40°C to 80°C. How many kcal of heat are necessary to do this?…
A: The mass of the water, The change in temperature,
Q: A 780 cm X 1320 cm house is built on a 12 cm thick concrete slab of thermal conductivity 0.68 W/m.K.…
A: Given that--- A 780 cm X 1320 cm house is built on a 12 cm thick concrete slab of thermal…
Q: What is the final temperature of a substance that has a mass of 30 g, an initial temperature of 200…
A:
Q: The same amount of heat entering identical masses of different substances produces different…
A: The expression for find final temperature of object is Tf=Qmc+Ti a) For water,…
Q: The same amount of heat entering identical masses of different substances produces different…
A: The amount of heat required to raise the temperature is
Q: A closed box is filled with dry ice at a temperature of -81.3 oC, while the outside temperature is…
A: we will use formula of heat energy. 81.3+273= 354.3 kelvin 21.5+273= 294.5 kelvin
Q: The rate of heat transfer on a cold day in the Canada through a rectangular window is 2336 W. The…
A: The Law of heat conduction is given as: Q.=kAT2-T1d where, Q. is rate rate of heat transferT2-T1 is…
Q: In a laboratory experiment, 16.0 J of heat raised the temperature of a 199-g object from 25.0° C to…
A: Given data: Heat (Q) = 16.0 J Mass (m) = 199 g = 0.199 kg Initial temperature (T0) = 25.0°C = 298 K…
Q: A 700 cm X 1320 cm house is built on a 12.4 cm thick concrete slab of thermal conductivity 0.78…
A: Rate of heat loss = KA(∆T/∆x) Where ∆T/∆x is the temperature gradient A = area K= thermal…
Q: A granite wall has a thickness of 76.3 cm, an area of 5.61 m by 2.95 m and a thermal conductivity of…
A: Given thickness(d)=0.763 m area(A)=5.61 x 2.95 m2 conductivity (k)=2.1 W/(m 0 C) T2=28.2 oC…
If I have an unknown substance of mass m=2.54kg which requires Q= 3430J of heat to change its temperature by ten degrees Kelvin, what is this substances specific heat?
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- At 25.0 m below the surface of the sea, where the temperature is 5.00C, a diver exhales an air bubble having a volume of 1.00 cm3. If the surface temperature of the sea is 20.0C, what is the volume of the bubble just before it breaks the surface?A certain substance has a mass per mole of 50.0 g/mol.When 314 J is added as heat to a 30.0 g sample, the sample’s temperature rises from 25.0 C to 45.0 C. What are the (a) specific heat and (b) molar specific heat of this substance? (c) How many moles are in the sample?The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 260 J/s. The energy is transferred a distance of 1.5 x 103 m through a body whose surface area is 1.4 m². Assuming that the thermal conductivity is that of body fat, determine the temperature difference between the capillaries and the surface of the skin.
- A closed box is filled with dry ice at a temperature of -81.3 oC, while the outside temperature is 21.5 oC. The box is cubical, measuring 0.392 m on a side, and the thickness of the walls is 4.40 × 10-2 m. In one day, 3.93 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made.A common practice for a person with a high fever is to take a bath in cool water. Assuming an 80 kg person is really ill and needs to cool down from 40°C to 37°C. What is the minimum amount of water needed for bathing assuming the water begins at room temperature, 25°C? The specific heat of the body on average is 3470 J/kg°C and water is 4186 J/kg°C. 16.6 kg 212.2 kg 200 kg 19.8 kgA closed box is filled with dry ice at a temperature of -80.1 °C, while the outside temperature is 27.0 °C. The box is cubical, measuring 0.383 m on a side, and the thickness of the walls is 3.95 × 10-² m. In one day, 3.11 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number i 0.0155 Units m^3
- If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?. Hint: To get the ΔT (Change in temperature), get the difference between final temperature (Tf) and initial temperature (Ti). [ΔT = Tf – Ti ]When excessive heat is produced within the body, it must be transferred to the skin and dispersed if the temperature at the body interior is to be maintained at the normal value of 37.0 °C. One possible mechanism is conduction through body fat. Suppose that heat travels through 0.03 m of fat in reaching the skin, which has a total surface area of 1.6 m2 and a temperature of 34.5 ° C. How much heat is transferred to the skin in 10 minutes, assuming the conductivity of body fat to be k = 0.20 J/ (s*m*° C)? Q unitIce of mass 12.8 kg at 0°C is placed in an ice chest. The ice chest has 2.7 cm thick walls of thermal conductivity 0.07 W/m·K and a surface area of 1.29 m2. Express your answers with appropriate mks units. (a) How much heat must be absorbed by the ice during the melting process? (b) If the outer surface of the ice chest is at 39° C, how long will it take for the ice to melt?
- What mass of steam at 100° C must be added to 1.00 kg of ice at 0°C to yield liquid water at 20 °C? The heat of fusion for water is 333 kJ/kg , the specific heat is 4186 J/kg · C° , the heat of vaporization is 2260 kJ/kg. Express your answer to two significant figures and include the appropriate units. HÀ ? Value Units m =A 755-g sample of water is heated from 5.50°C to 98.40 °C. Calculate the amount of heat absorbed (in kilojoules) by the water. Specific heat of water = 4.184 J/g-°C . Your answer must be 4 sig figure and in kJA 900 g copper rod at 20 degrees celcius has a length of 1.0000 m. The thermal expansion coefficient of copper is 17 x 10^-6 degrees celcius -1. The specific heat capacity is 0.385 kJ/kg degrees celcius. Question A: The copper is heated to 400 degrees celcius. What is the new length? Give the answer in meters and with 4 digits of precision after the decimal. Question B: The hot copper is then quenched by dunking the entire rod in a bucket with 10 kg of water at 20 degrees celcius. The specific heat capaciy of water is 4.18 kJ/kg degrees celcius. If none of the water turns to steam what is the equilibrium temp of the copper rod and water? Please give the answer in degrees celcius Question C: You measure the equilbrium temp and find that it is 24 degrees celcius. If the latent heat of vaporization of water is 2,260 kJ/kg, what mass of water turned to steam? Answer in grams
