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A 90-kg man and a 60-kg woman stand at opposite ends of a 150-kg boat, ready to dive, each with a 5-m/s velocity relative to the boat. Determine the velocity of the boat after they have both dived, if (a) the woman dives first, (b) the man dives first.
you bought a truck three years ago for 150000. you took out a 5 year loan at 4 and you assumed the salvage value at
Describe the four incorrect assumptions concerning robot - arm movement that are most frequently responsible for impact accidents.
a 600 mw steam power plant operates on a simple rankine cycle. steam enters the turbine at 40 mpa and 500oc and is
when a plastics plant is redesigned a tank exit is now facing the wrong direction and must be connected to a pipe of
a closed system undergoes a reversible process from 220 k to 440 k with the heat transferred per degree of temperature
in an automotive gas turbine the centrifugal compressor is driven at 40000 rpm by an axial turbine. the compressor
A 50 hp motor with an efficiency of 0.80 is to be replaced by a newer model motor with an efficiency of 0.90. The motor is expected to operate 3000 hours per year. The cost of electricity in our area is $0.06 per kWhr.
a heat pump is to be used to heat a building during the winter. the building is to be maintained at 22.9oc at all
a rigid insulated vessel is divided in half by a valve. the left side initially contained 1 m3 of air at 300 k and 1
a hail storm caused nearly golf-ball sized hail to fall on a house. the hailstones were nearly spherical with a
assuming that the solid shaft has been replaced by a hollow shaft of the same cross-sectional area and with an inner diameter equal to half of its own outer diameter.
A new cast iron pipe is 5 km long and 15 mm diameter is used to convey water at a rate of 0.0150m3s-1. Given the absolute roughness of the pipe is 0.26 mm, density of water is 998 kg/m3 and dynamic viscosity of water is 1.14 × 10-3 kgm 1s-1.
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