E_in is the energy being absorbed by an object, and E_out is the energy being ra

Question

E_in is the energy being absorbed by an object, and E_out is the energy being radiated. If the temperature of an object is not changing, what does this tell us about E_in and E_out? If the temperature of an object is increasing, what does this tell us about E_in and E_out? Your bank account has the same balance on April 1 as it did on March 1. Your friend suggests that this means that you did not deposit or withdraw any money for the entire month. Is that correct? Explain why or why not. Heat capacity is the amount of energy it takes to warm up an object by 1 K. The heat capacity of water is 4.18 J/g/K; in other words, if you add 4.18 J to 1 g of water, the water will warm by 1 K. Imagine you have a cup containing 200 g of water that is absorbing 150 W of power. At what rate is the water warming? Answer is degrees K per second. If the cup starts at room temperature, how long would you have to heat it to reach boiling? To verify your answers make sure the units work out

Explanation / Answer

A) If the temperature is not changing, then it means that whatever energy is recieving, it is radiating it back, all of it.

So Ein =Eout

B) If temperature is increasing, it tells that it is absorbing more but radiating less.

So Ein > Eout

Related Questions

Navigate

• Browse (All)
• Browse E
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.