Chapter 10: Q2P (page 260)
(I) What is the approximate mass of air in a living room 5.6× 3.6× 2.4m?
The mass of the air is 62.4 Kg.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
An airplane has a mass of \({\bf{1}}{\bf{.7 \times 1}}{{\bf{0}}^{\bf{6}}}\;{\bf{kg}}\) and the air flows past the lower surface of the wings at 95 m/s. If the wings have a surface area of \({\bf{1200}}\;{{\bf{m}}^{\bf{2}}}\), how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?
Question: Suppose a person can reduce the pressure in his lungs to \({\bf{ - 75\;mm}}\)- Hg gauge pressure. How high can water then be "sucked" up a straw?
Why don’t ships made of the iron sink?
(I) If the force \(F\) needed to move the wire in Fig. 10–34 is \(3.4 \times {10^{ - 3}}\;{\rm{N}}\), calculate the surface tension \(\gamma \) of the enclosed fluid. Assume \(l = 0.070\;m\).
A hurricane-force wind of \({\bf{180}}\;{\bf{km/h}}\) blows across the face of a storefront window. Estimate the force on \({\bf{2}}{\bf{.0}}\;{\bf{m \times 3}}{\bf{.0}}\;{\bf{m}}\) the window due to the difference in air pressure inside and outside the window. Assume the store is airtight so the inside pressure remains at 1.0 atm. (This is why you should not tightly seal a building in preparation for a hurricane.)
What do you think about this solution?
We value your feedback to improve our textbook solutions.
