Engineering, 06.10.2019 07:00 zalyndevola
Acoin placed 30.8 cm from the center of a rotating, horizontal turntable slips when its speed is 50.8 cm/s.
(a) what force causes the centripetal acceleration when the coin is stationary relative to the turntable?
(a) static friction
(b) inertia
(c) kinetic friction
(d) centrifugal force
(b) what is the coefficient of static friction between coin and turntable?
Answers: 1
Engineering, 03.07.2019 14:10
Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.
Answers: 3
Engineering, 04.07.2019 18:10
Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.
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Engineering, 04.07.2019 18:10
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Engineering, 04.07.2019 19:10
What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?
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Acoin placed 30.8 cm from the center of a rotating, horizontal turntable slips when its speed is 50....
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