Engineering, 12.12.2019 04:31 ivanyeli4520
The 137-kg industrial door with mass center at g is being positioned for repair by insertion of the 3° wedge under corner b. horizontal movement is prevented by the small ledge at corner a. the coefficients of static friction at both the top and bottom wedge surfaces are 0.56. calculate the rightward force p' which would remove the wedge from under the door. assume that corner a does not slip for your calculation of p', but then check this assumption; the coefficient of static friction at a is 0.62.
Answers: 3
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 18:20
Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?
Answers: 2
Engineering, 04.07.2019 18:20
For a gate width of 2 m into the paper, determine the force required to hold the gate abc at its location.
Answers: 1
Engineering, 04.07.2019 19:10
The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false
Answers: 2
The 137-kg industrial door with mass center at g is being positioned for repair by insertion of the...
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