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a) A typical adult human lung contains about 330 million tiny cavities called alveoli. Estimate the average diameter of a single alveolus. Assume the alveoliare spherical and a typical human lung is about 2 liters. m
b) how many kisses is 80 hectokisses? and what would you be if youearned a gigabuck a year?
A bead of mass m slides without friction down a track and around a loop-the-loop of radius R. The initial height of the track is h = 3.5R. What is the speed of the mass after going around the loop
A parallel plate capacitor of capacitance 7.2 µF has the space between the plates filled with a slab of glass with ? = 3.5. Find the capacitance after the glass is removed
A rectangular plate has a length of (19.7 ± 0.2) cm and a width of (8.6 ± 0.1) cm. Calculate the area of the plate, including its uncertainty
a coal-fired electrical generating plant has an efficiency of 38. then temperature of the steam leaving the boiler is
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 1.80X106 m/s. Find the centripetal acceleration of the electron
A 160 kg horizontal beam is supported at each end. A 300 kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports
The Trans-Alaskan pipeline is 1300 km long, reaching from Prudhoe Bay to the port of Valdez, and is subject to temperatures ranging from -73°C to +35°C. How much does the steel (average coefficent of linear expansion 11 x 10-6 (°C)-1) pipeline expand..
How many radians does a point on Earth's surface move in 6 hours as a result of the Earth's rotation? What is the speed of a point on the equator
Two masses m1 and m2 sit on a horizontal, frictionless table and are connected by a light string, Find the tension in each of the two strings
A 10 kg block is set in motion upa 20 degree inclined plane with an initial speed of 8.0 m/s. find the distance up the surface of the plane the block will travel
Suppose the temperature of 4.72 L of ideal gas drops from 351 K to 275 K. (a) If the volume remains constant and the initial pressure is atmospheric pressure, Find the number of moles of gas
A drop of water on a countertop reflects light from a flower held 3.10 cm directly above it. What is the focal length of the water drop
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