Soda and lime are added to a glass batch in the form of soda ash (na2co3) and limestone (caco3). during heating, these two ingredients decompose to give off carbon dioxide (co2), the resulting products being soda and lime. compute the weight of soda ash and limestone that must be added to 100 lbm of quartz (sio2) to yield a glass of composition 75 wt% sio2, 15 wt% na2o, and 10 wt% cao.

Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned

What precautions should you take to prevent injuries when dealing with heavy loads?

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.