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A boat of mass M is at rest in still water and a man of mass m is sitting at the bow. The man stands up, walks to the stern of the boat and then sits down again. If the water offers a resistance to the motion of the boat proportional to the velocity of the boat, show that the boat will eventually come to rest at its orginal position.
[This remarkable result is independent of the resistance constant and the details of the man's motion.]
Find the stiffness of each spring when a refrigerator unit having a mass of 30 kg is to be supported by three springs. The force transmitted to the supporting structure is only 10% of the impressed force. The refrigerator unit operates at 420 rpm.
a hydraulic system has a mechanical advantage of 4. If a smaller piston has a diameter of 5 inches what is the diameter of the larger piston?
Calculate the adiabatic flame temperature attained when methane at 298k, is combusted (a) with oxygen in the molar ratio air/CH4 = 9.524. Assume that CO2 and H2O are the products of the combustion. The adiabatic flame temperature is that temperature ..
A sample of dried Appanoose County coal has a mass analysis of 71.1% carbon, 5.1% hydrogen (H), 9.0% oxygen (O), 1.4% nitrogen (N2), 5.8% sulfur, and the rest noncombustible ash. For complete combustion with the theoretical amount of air, determin..
a pipe transports water in a 4-cm-diameter pipe with an average velocity of 10 ms. the pipe undergoes a 90 degree bend
The pipe flow experiment deals with fluid flow through a non-circular cross-section “pipe”. Please explain, using supporting equations, HOW you would calculate the pressure loss during fluid flow between two points along the pipe.
If he is speaking to D and S at the joint rate in part (b), can he also speak to F at some positive rate? If so, what is it? If not, why not?
a fluid flows through an adiabatic device. at one end the velocity is 30 ms h 320 kjkg and s 0.695 kjkg k and at the
determine the density and specific volume of carbon monoxide at a pressure 100 kpa and a temperature of 300 k. for co
A 24-tooth pinion cut with an 8-pitch, 20° full-depth hob drives a 56-tooth gear. Determine the outside radii so that the addendum circle of each gear passes through the interference point of the other. Calculate the value of k for each gear.
Use the USDA Quick Stats service (http://quickstats.nass.usda.gov//) to compare the 2009 oat yields between New York and California. What additional land would California require to meet the same amount of oat production as New York?
Over time, dust accumulates on the refrigerator's con- denser coil, which is located behind the refrigerator, increasing the hot side resistance to Rh,d = 0.1 K/W. It is desired to have a refrigerator cooling rate of qin = 750 W. Using the results ..
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