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11.What are the alloy metals in bronze?对Copper and Zincb) Copper, Tin and ZincCopper, Lead and Zincd) Copper and Aluminium12.What is the mechanical property of metal returning to its original shape afler the appliedforce is released?a) Tenacityb) Plasticitylasticityd) MalleabilityWhat is the density of an iron cube weighing 5 kg and volume is 600 cm3 2a) 8.33 gm/cmb) 8.35 gm/em13.c) 8.37 gm/cm3d) 8.39 gm/cm14.What is the formula for velocity (v) in equation of motion?c) vut2gs2A car moving with a velocity of 50 km/hr is brought to rest in 45 secs. Find out theretardation in m/seca) 0.288 m/secb) 0.308 m/sec15.c) 0.358 m/secd) 0.368 m/secwhat is the value of"X, if400 : 8000a) 18b) 191: K?16,d) 22Contd...4/ |
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Answer» Copper ZincElasticityp=m/v 5000g/600cm^3 = 8.33gm/cm^3v^2=u^2+ 2gsa= v-u/t u = 0 v = (50×5/18 )m/st=45sProduct of means = Product of extremes400×x= 8000×1400x=8000x=20 |
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