Question 3 (5 points) v Saved A ceramic mug is at a temperature of 343 K (about 160°F). The mug has a surface area of about 0.03 m2 and ceramic has an emissivity of about 0.9. If the ambient temperature of the room is 293 K (about 70°F), what is the net rate at which energy is lost from the mug by radiation? O 21.2 J/s O 1.75 x 108 J/s Q 4.87 x 10-5 J/s O J/s O9.9 J/s
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
![**Educational Transcription**
---
**Question 3 (5 points):**
A ceramic mug is at a temperature of 343 K (about 160°F). The mug has a surface area of about 0.03 m² and ceramic has an emissivity of about 0.9. If the ambient temperature of the room is 293 K (about 70°F), what is the net rate at which energy is lost from the mug by radiation?
- 21.2 J/s
- 1.75 × 10⁸ J/s
- 4.87 × 10⁻⁵ J/s
- 0 J/s
- 9.9 J/s
*The selected answer is 0 J/s.*
---
**Question 4 (5 points):**
*Note: The internet connection was lost, so answers are no longer being saved.*
An unknown metal absorbs 0.015 J of heat energy while causing the temperature of the metal to rise by 60°C. The specific heat of the metal is: [The answer is not provided due to the connectivity issue.]
---
**Additional Notes:**
The content includes a basic physics problem related to thermodynamics, focusing on the concept of radiation and heat transfer. Unfortunately, due to connectivity issues, progress was halted, affecting continuity beyond this point.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9f5b5240-6db5-4876-aec3-efe299925cc7%2F55773856-9ea9-4ff8-9aa5-619b876bb132%2Fi004kxep.jpeg&w=3840&q=75)
Step by step
Solved in 2 steps with 2 images
