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Question: A stainless steel pipe (k = 15 W/m-C) of length l = 10 m, inner diameter di = 0.5 m, and outer diameter do = 0.6 m is coated with an insulation material (ki = 0.0001 W/m-C) to allow a total heat loss of q = 10 W when the outdoor temperature is -5°C and the temperature of the fluid inside the pipe is 30°C. What is the thickness of the insulating layer?
a boat has a mass of 40000kg. its engine gives it an acceleration of 0.2 ms while it goes a distance of 100m from
Two point particles of charge Q1 = 46 µC and Q2 = 81 µC are found to have a potential energy of 43 J. What is the distance between the charges
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^7 m/s, determine the momentum of the base ball
A sideshow barker claims that the star of the show can throw a 7.3 kilogram Olympic-style hammer faster than a speeding bullet. Find when the hammer flies off is it really moving faster than a bullet
A cube with edge 3.0 cm floats with 2/3 of its volume below the surface of the water. What is the mass of the block
What volume is occupied by 1 mole of an ideal gas at a pressure of 1.00 atm and a temperature of 0 degrees Celsius
A piano wire with mass 3.45g and length 85.0cm is stretched with a tension of 31.0N. Calculate the average power carried by the wave
What is the influence of friction on banked highway turns? To address this question, first consider a car that encounters a circular highway curve of radius 256m banked toward the turn center.
The brass bar and the aluminum bar in the drawing are each attached to an immovable wall. At what temperature will the gap be closed
A 85.5-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.59 rad/s. Find the angular velocity of the platform with its load
A planet of mass m= 6.55 x 1024 kilogram is orbiting in a circular path, a star of mass M= 6.05 x 1029 kilogram. The radius of the orbit is R=7.95 x 107 kilometer. Obtain the orbital period of the planet
A racing car of mass 1000kg moves around a banked track at a constant speed of 30ms. Assuming the total reaction at the wheels is normal to the track and the horizontal radius is 100m. Calculate the angle of inclination of the track to the horizon..
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