Engineering, 18.02.2020 18:49 Jazzyyyy088888
The net potential energy EN between two adjacent ions is sometimes represented by the expressionEN=−Cr+Dexp(−rrho)in which r is the interionic separation and C, D, and rho are constants whose values depend on the specific material.(a) Derive an expression for the bonding energy E0 in terms of the equilibrium interionic separation r0 and the constants D and rho using the following procedure:(i) Differentiate EN with respect to r, and set the resulting expression equal to zero.(ii) Solve for C in terms of D, rho, and r0.(iii) Determine the expression for E0 by substitution for C in the given equation.(b) Derive another expression for E0 in terms of r0, C, and rho using a procedure analogous to the one outlined in part(a).
Answers: 3
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:10
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
Answers: 1
Engineering, 04.07.2019 18:10
An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet
Answers: 3
Engineering, 04.07.2019 18:10
Aplate clutch has a single pair of mating friction surfaces 250-mm od by 175-mm id. the mean value of the coefficient of friction is 0.30, and the actuating force is 4 kn. a) find the maximum pressure and the torque capacity using the uniform-wear model. b) find the maximum pressure and the torque capacity using the uniform-pressure model.
Answers: 3
The net potential energy EN between two adjacent ions is sometimes represented by the expressionEN=−...
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