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The outer surface of the grill hood shown in the figure is at 47°C and the emissivity is 0.93. The heat transfer coefficient for convection between the hood and the surroundings at 27°C is 10 W m-2K-1. Determine the net rate of heat transfer between the grill hood and the surroundings by convection and radiation, in kW m-2 of surface area.
Assume that the angles are small enough so that sintheta is approximately equal to tantheta . Find the separation y when the light has a wavelength of 610 nm.
Light-rail passenger trains that provide transportation within and between cities speed up and SLOW down with a nearly constant (and quite modest) acceleration. What is the final speed
an object is at a distance d to the left of a flath screen. A converging lens with focal length f
a transformer connected to a 120-v rms ac line is to supply 12. v rms to a portable electronic device. the total
A point mass is placed on the tip of a semi-spherical dome of radius R=1, with kinetic friction coefficient p.k=0.3 between the point mass and the dome surface. The particle is given an initial horizontal speed vo. Use Lagrangian method and find t..
The second harmonic of an open organ pipe has the same frequency as the first overtone of a closed pipe. find the length of each pipe
A loudspeaker of mass 18.0 {rm kg} is suspended the distance of h = 1.20 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 2.70 {rm m}. What is the tension T in each of the cables? Utili..
F ind the speed of the golf ball just after impact
Consider a star of mass M=10Msun, composed entirely of fully ionized C-12. Its core temperature is 6*10^8K. Suppose the star produces energy via the reaction C12 + C12 --> Mg24. the atomic weight of C12 is 12, and that of Mg24 is 23.985. What fractio..
The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m, B = 10.0 m, C =14.0 m, and D = 25.0 m. Determine the (a)magnitude and (b) direction for the resultant that occurs when these vectors are added together.
a velocity selector has an electric field of magnitude 2470 nc directed vertically upward and a horizontal magnetic
An electron moves through a region of crossed electric and magneticfields. The electric field E = 2 000 V/cm and is directedstraight down. The magnetic field B = 0.80 mT and isdirected to the left. For what velocity v of the electron into the pape..
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