Question

osUniPhys1 19.1.P.01 9. Ask Your Teacher 0.67/1 points Previous Answers My Notes 2. Suppose a gas-filled incandescent light bulb is manufactured so that the gas inside the bulb is at atmospheric pressure (absolute pressure) when the bulb has a temperature of 18.0°c. (Enter your answers to at least four significant figures.) (a) Find the gauge pressure inside such a bulb in atmospheres when it is hot, assuming its average temperature is 55.0°C (an approximation) and neglecting any change in volume due to thermal expansion or gas leaks. 0.1271 atm (b) The actual final pressure for the light bulb will be less than calculated in part (a) because the glass bulb willl expand. What will the actual final gauge pressure be in atmospheres, taking this into account? 1.12241 Xatm Is this a negligible difference? (Assume the difference is negligible if the two pressures are within 2.0% of each other.) Yes No

Answer 1

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