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A circular cylinder 0.1ft in outside diameter and initially of temperature 320F is quenched in a batch of engine oil at 140F. The oil moves in cross flow over the cylinder at 5.5ft/s. Determine the initial rate of heat transfer from the cylinder per unit length.
A short coil consisting of 10 loops has a radius of 10 centimeter. Determine what current must be passed through the coil to generate a magnetic field of 56.8 mT at an axial distance of 30.0 centimeter
When monochromatic light shines perpendicularly on a soap film(n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of reflected light is observed is 422 nm. What is the vacuum wavelength of t..
A boy uses this string to whirl a 10-kg stone in a horizontal circle of radius 10 m. The boy continuously increases the speed of the stone. At approximately illustrate what speed will the string break?
The filament of a light bulb has a temperature of 3.48 x 103 °C and radiates 60.0 W of power. The emissivity of the filament is 0.253. Find the surface area of the filament
a satellite that weighs 4900N on the launchpad travels around the earths equator in a circular orbit with a period of 1.667h. determine the altitude of the satellite above the earths surface
Ag is often used for Fabry-Perot mirror coating material. Calculate the reflectivity, R (not r ), of the two mirrors that are needed to filter two wavelengths that are 1nm apart, 50 GHz apart, 1GHz apart. What is a typical realizable Reflectivity f..
A Federation starship (2.20 ×106 kilogram) uses its tractor beam to pull a shuttlecraft (2.20 × 104 kilogram) aboard from a distance of 12 kilometer away. Determine how far does the starship move as it pulls the shuttlecraft aboard
The nozzle of a fountain jet sits in the center of a circular pool of radius 3.30 . If the nozzle shoots water at an angle of 65, what is the maximum speed of the water
between the orbits of mars and jupiter several thousand small objects called asteroids move in nearly circular orbits
The Space Shuttle travels at a speed of about 7.60 103 m/s. The blink of an astronaut's eye lasts about 120 ms. How many football fields (length = 91.4 m) does the Shuttle cover in the blink of an eye?
You press two flat pieces of glass together so that a very thin layer of air is trapped between them. What is the smallest spacing between the plates
q1. a 46 kg girl is standing on a 145 kg plank. the plank initially at rest is free to slide on a frozen lake which is
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