Question

# Please help, please reply in text. Thanks!!

Convert an absolute pressure of

7.00x105 N/m2 to gauge pressure in lb/in2. (This value was stated to be just less than 90.0lb/in2 in Example 13.9. Is it?)

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 20.0o C. (a) Find the gauge pressure inside such a bulb when it is hot, assuming its average temperature is 60.00C (an approximation) and neglecting any change in volume due to thermal expansion or gas leaks. (b) The actual final pressure for the light bulb will be less than calculated in par (a) because the glass bulb will expand. What will the actual final pressure be, taking this into account? Is this a negligible difference?

The escape velocity of any object from earth is 11.2km/s. a) Express this speed in m/s and km/h. b) at what temperature would oxygen molecules (molecular nass is equal to 32.0 g/mol) have an average velocity v rms equal to earths escape velocity of 11.1km/s?

What is the ratio of their average Velocities? (b) At what temperature would their average velocities differ by 1.00m/s? (c) Do the answers in this problem imply that this technique may be difficult?

#### Top Answer

1) Pressure: P= 86.8 lb/in^2 2) a) GP = 13,832.8 Pa b) Actual pressure: GP = 13,709.3 Pa 3) Using kinetic energy equation: KE... View the full answer

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Question 02 -Part B ,question is not complete. Question... View the full answer