Suppose a gas-filled incandescent light bulb is manufactured so that the gas ins

Question

Suppose a gas-filled incandescent light bulb is manufactured so that the gas inside the bulb is at atmospheric pressure when the bulb has a temperature of 20.0 *C. Find the gauge pressure inside such a bulb when it is hot. assuming its average hot temperature is 70.0 "C. The actual final pressure of the light bulb will be different than calculated above because the glass bulb will expand What will the final actual gauge pressure be, taking this into account? The volume expansion coefficient ofr glass beta = 2.700 x 10^-6 degree C^-1

Explanation / Answer

A) P/T = constant

=> 1.013*105/293.15   = P/343.15

=> 1.186 *105 Pa

B) Considering expansion of glass bulb

Final Pressure = 1.186 *105( 1 - 2.7*10-5*50)

                         = 1.1844*105 Pa

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

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