92. A heated metal ball is kept in cooler surrounding. Its rate of cooling is 2º C per minute when its temperature is 60° C and 1.20 per minute when its temperature is 52° C. Determine the temperature of the surrounding and the rate of the cooling when the temperature of the ball is 48° C. Also find the temperature at which, rate of the cooling is C per minute. LIAL.

Q: 59. Find the net rate of heat transfer by radiation from a skier standing in the shade, given the…

A: given, the person is completely clothed in white. the emissivity of the person is e =0.2 the surface…

Q: How much energy is absorbed when 25.0 g of ice at 0.0°C melts to form water at 0.0°C? The heat of…

A:

Q: 9. An automobile tire is inflated with air originally at 10.0 °C and normal atmospheric pressure. At…

A:

Q: 2. A 10 kW drilling machine is used to drill a bore in a small aluininium block of mass 8-0 kg. How…

A:

Q: Calculate the rate of heat conduction out of the human body, assuming that the core internal…

A:

Q: 7.) Given some material of mass 250 grams heated from 20.0 Co to 35.0 Co using 401.25 calories of…

A:

Q: 17. An aluminum rod 50 cm long, and 1.0 cm in diameter is subjected to two different temperatures at…

A: Given Data :  L = 50cm = 0.50m  D = 1cm = 0.01m  T1 = 50°C = 50+273 = 323K T2 = 95°C = 95+273 = 368K…

Q: copper slab of length 15.0cm and cross-section area 105cm2 has Th=125degree Celsius and Tc=10degree…

A: Heat flow Q = KA (ΔΤ/Δx)t

Q: 9. Based on the specific heat table given, which of the following substances is the best thermal…

A: 10 ) specific heat is the heay required to raise the temperature of the object of unit mass by 1°C…

Q: 4. A box with total wall area of 0.6m² and wall thickness 3cm is used to cool drinks. The inner and…

A: given,Area A=0.6m2d =3cmthermal conductivity of box k=0.01W/mKi)The rate of heat flow,…

Q: 57. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat…

A: Let the heat transferred be Q in time t seconds, then the rate of heat transfer is given as Qt. Area…

Q: 1. Find the specific heat of a material, if it takes 142 kJ of heat to raise the temperature of 2.5…

A: Calculate the specific heat of the material.             Q=mC∆T142×103=2.5×C×80          C  =710…

Q: recorded (in Antarctica) was - 139°F. The lowest temperature What is this temperature in the Kelvin…

A: Temperature in degree Fahrenheit is TF=-139°F Find: Equivalent temperature in Kelvin scale.

Q: Given the following laboratory calculations, properly report each result: a. (3 pts) Rate of heat…

A: a)R=0.441238SR=0.014875rate of heat gain in calarories per second:,R=R±SR…

Q: 1. Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat…

A:

Q: elsius Was adwes IE1au neated at a certain temperature which causes It to absorb 800. Jof heat…

A: Given  Mass of sample m=10g Heat absorbed Q=800J Initial temperature Ti=250 C specific heat…

Q: 11.The coefficient of thermal conductivity of copper is nine time that of steel. In the composite…

A:

Q: 8. A 2.50-kg piece of aluminum that has a temperature of –150 °C is added to 1.30 kg of water that…

A: mass of aluminum (m) = 2.5 kg Initial temperature of aluminum = - 150oC mass of water = 1.30 kg…

Q: 1. Determine the elongation of steel rod which is 100 meter in length if the temperatureincreases…

A: Given data: Length of the steel rod, L=100 m Temperature deference,  ΔT=57C∘-27C = 30∘C∘ Coefficient…

Q: A block of metal of mass 0.320 kg is heated to 158.0°C and dropped in a copper calorimeter of mass…

A:

Q: 22. A 1.6-kg block of sample material is heated from 20.0°C to 65.0°C by the addition of 28 kJ of…

A: Specific heat of a material is the amount of heat energy that should be applied to increase the…

Q: 1. The highest atmospheric temperature ever recorded on Earth was 57.80C. How will you express this…

A: The given highest atmospheric temperature is 57.80 C. A temperature of Celsius scale can be…

Q: 1. An ice cube of mass 65 g is taken from a freezer at -15o C and dropped into 125 cm3 of water at…

A: When two objects at different temperatures are kept in contact, they exchange heat until reaching an…

Q: Consider a person whose exposed surface area is 1.7 m2, emissivity is 0.85, and surface temperature…

A: Given: Surface area, A = 1.7 m2  Emissivity ε = 0.85 Surface temperature, Ts = 30℃ To determine the…

Q: A copper sphere of surface area 300 sq cm and at a temperature of 427"C is plcec enclosure…

A: To find-Rate at which heat is being lost by this sphere dQdt=?Given-e=0.6σ=5.7×10-8S.I. UnitsA=300…

Q: 6. A 1.25 kg rod of aluminum is thrown into a furnace. Its initial temperature is 20 °C. It then…

A: mass of rod (m) = 1.25 kg Initial temperature (T) = 20oC Final temperature (T') = 660oC Specific…

Q: 12. A 0.400-kg of water is initially at a temperature of 35.0 °C. How m heat is required to boil…

A:

Q: 1. Following vigorous exercise, the body temperature of a person weighing 85-kg is 40 °C. At what…

A:

Q: 9.) A 100 lb steel casting at 2700 degrees Farenheit is placed on a 300 lb copper plate - the plate…

A:

Q: 10. A 0.300-kg of ice is initially at temperature of -8.0 °C. How much heat is required to melt…

A: The heat required to melt the ice will be equal to heat required to convert ice to 0°C plus latent…

Q: Radiation makes it impossible to stand close to a hot lava flow. Calculate the rate of heat transfer…

A: Area of fireplace is Temperature of lava is Temperature of surroundings is Emissivity of lava is…

Q: 1. Imagine you have 1 kg each of iron, glass, and water, and all three samples are at 10°C. The…

A:

Q: A 90.0-g piece of solid copper at 1000 C is placed in a thermally insulated flask tht contains 40.0…

A: Given,mass of the copper, m = 90.0 gtemperature, Tc = 100 °Cspecific heat, Cc = 0.0920 calg.°Cmass…

Q: 5. Calculate the rate of heat conduction through house walls that are 13.0 cm thick and that have an…

A:

Q: 13. A 10.0 g metal sample at 25 Celsius was heated at a certain temperature which causes it to…

A: Given Mass of metal m=10g Initial Temperature Ti=250 C Heat absorb Q=800J Specific heat metal…