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A spherical mini submarine of diameter 3 m is designed to be operated by two persons. The submarine is used for deep sea exploration where the water temperature may be as low as 6 degrees C. It was found that under such conditions the inside air temperature is uncomfortably cold. Specify the capacity of an electric heater that will maintain an inside temperature of 21 degrees C. Power source limitation requires that the heater does not use more than 500 W. Furthermore, weight consideration limits the increase in weight to a maximum of 34 kg. The inside heat transfer coefficient is estimated to be 12 W/m^2-C. However there is considerable uncertainty regarding the outside heat transfer coefficient. A very rough estimate suggest that it could be as high as 100 W/m^2-.
Gear A rotates with an angular velocity of 100 rpm clockwise. Knowing that the angular velocity of arm AB is 50 rpm counterclockwise, determine the corresponding angular velocity of gear B.
minimum weight design of a variable shape three-bar truss.numerical solution using the matlab optimization toolbox
suppose we wish to test the hypotheses ho u15 h1 u does not 15 where we know that sigma2 9.0. if the true mean is
an adiabatic pump operating at steady state compresses liquid water from an initial condition of 10 bar and 40degc to a
what would be the effect on the calculated value of the vane efficiency for mass of jockey in error by 0.001 measurements.
A short 60-mm-diameter circular bar is made of a material for which the maximum safe compressive stress is 80 MPa and the maximum safe shearing stress is 30 MPa. Determine the maximum axial compressive force that can be safely applied.
1 a gas turbine power plant produces a net power output of 100 mw with an overall thermal efficency of 35a if the
the motion of a particle is defined by the equations x10t-5sint and y10-5cost where x and y are expressed in feet and t
a solid shaft of 30mm diameter is to be used determine the maximum torque that can be applied without exceeding an
canon at an angle 30 degree tube is rotating at an axes with anguar velocities w1 and w2 2 and 5 rad/s and tube blows a ball at b with constant rate 7 m/s . what is velocity and acceleration of ball at tube end ball is at distance of 3m from tube ..
consider a mass going through a polytropic process where pressure is directly proportional to volume n-1 the process
determine the magitudes of the horizontal and vertical reactions of the chair on the man at the instant . At this instant he has a speed of 6 m/s, which is increasing at 0.5 m/s^2.
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