A styrofoam container used as a picnic cooler contains a block of ice at 0°C. If 564 g of ice melts in 1 hour, how much heat energy per second is passing through the walls of the container? The heat of fusion of ice is 3.33 x 10° J/kg. Answer in units of W.

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 sphere of surface area 1.25 m² and emissivity 1.0 is at a temperature of 100°C. At what rate does it radiate heat into empty space? (o = 5.67 × 10-8 W/m2.K4) O 3.7 W O 0.71 mW O 1.4 kW O 7.1 W O 9.9 mW

A closed box is filled with dry ice at a temperature of -83.9 °C, while the outside temperature is 26.9 °C. The box is cubical, measuring 0.350 m on a side, and the thickness of the walls is 3.80 x 10-2 m. In one day, 3.35 x 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number 30251.3 Units

A piece of iron block moves across a rough horizontal surface before coming to rest. The mass of the block is 2.8 kg, and its initial speed is 2.2 m/s. How much does the block's temperature increase, if it absorbs 78% of its initial kinetic energy as internal energy? The specific heat of iron is 452 J/(kg · °C). 0.004 X °C

A closed box is filled with dry ice at a temperature of -86.0 °C, while the outside temperature is 21.0 °C. The box is cubical, measuring 0.394 m on a side, and the thickness of the walls is 4.49 × 102 m. In one day, 3.76 × 106 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made. Number Units

A thermally isolated container has 479 grams of water in it and a 376 gram plastic block. The water had an initial temperature of 352 K. The plastic had an initial temperature of 300 K. The plastic and water reach an equilibrium temperature of 342 K. Water has a specific heat of 4.182 J/(gram K). What is the specific heat of the plastic block in J/(gram K)?

A copper block is removed from a 300 ∘C oven and dropped into 1.30 kg of water at 22.0 ∘C. The water quickly reaches 32.0 ∘C and then remains at that temperature. What is the mass of the copper block? The specific heats of copper and water are 385 J/(kg⋅K) and 4190 J/(kg⋅K) respectively. Express your answer to three significant figures and include the appropriate units.

How much energy is required to heat 8.6kg of ice from -20℃ to steam at 120C ? The specific heat capacity of ice is 2.097 J/kg C The latent heat of fusion of ice is: Lf = 3.33 × 105J/kg The specific heat capacity of water is 4186J/kg C The latent heat of vaporization of water is: Lv = 22.6 × 105J/kg The specific heat capacity of steam is 1996 J/kg C DO NOT include units. DO NOT write in scientific notation. Do not include any "spaces" in your answer. 1. The heat energy needed to raise the temperature of ice to 0 degrees Celcius (in Joules) = 2. The heat energy needed to convert ice to water at 0 degrees Celcius (in Joules) = 3. The heat energy needed to raise the temperature of water from 0 degrees to 100 degrees Celcius (in Joules)= 4. The heat energy needed to convert water to steam at 100 degrees Celcius (in Joules) = 5. The heat energy needed to raise the temperature of steam from 100 to 120 degrees Celcius (in Joules) = 6. Using the answers above, the total energy to convert ice at…

The temperature of a aluminum bar rises by 10.0°C when it absorbs 4.73 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of aluminum from these data.