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Calculate the horizontal force P on the light 10o wedge necessary to initiate movement of the 40-kg cylinder. The coefficient of static friction for both pairs of contacting surfaces is 0.25. Also determine the friction force FB at point B. (Check carefully your assumption of where slipping occurs).
many bridge designs today contain simple geometrical components but are constructed into complex ways to ensure that
1. a commercial refrigerator keeps food fresh at -12 ordmc. it is estimated that the refrigerator removes 3300 kjhr
a car engine produces 136 hp on the output shaft with a thermal efficiency of 30. the fuel it burns gives 35000 kjkg as
steam having a mass of 3kg and initially at 2.5mpa and 350degc has 2460kj of heat removed at constant temperature until
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
Calculate the maximum tensile and compressive stresses σt and σc, respectively, at the base of the tree due to its weight.
what is the radius of the largest particle that can be ejected?
derive eulers equations of motions stating all your assumptions. a write down the equation in vector form and explain
Draw a graph of the function for -4π≤ t≤ 4π and obtain its Fourier series expansion.
Steam steadily flows through a turbine to produce mechanical work. At the inlet, the pressure, temperature and velocity of the steam are 10 MPa, 450 °C and 110 m/s, respectively. The water exits this turbine at pressure of 10 kPa with the quality of ..
1. An air compressor operates at steady state with air pressure of 50 bar. Kinetic and potential energy effects are negligible. Determine the pump work input, in kJ per kg of water flowing, using (a) Eq. 6.51c, (b) an energy balance. Obtain data f..
A fan located within the tower draws in atmospheric air at 17°C, 0.098 Pa, 60% relative humidity with a volumetric flow rate of 110 m3/min. Saturated air exits the tower at 30°C, 0.098 MPa. The power input to the fan is 8 kW. Ignoring kinetic an..
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