A body of cross-sectional area, 0.4m² and a mass of 25kg is placed vertically. What is it’s tensile stress(g=10ms-2) A. 950Nm-2 B. 420Nm-2 C. 240Nm-2 D. 625Nl-2 16. In a resistance thermometer, a metal wire shows resistance of 500 at the ice point and 550 at steam point. The temperature when resistance is 535 would be… A. 65° B. 75° C. 60° D. 70° 17. Réaction of ethanol and phosphorus(v) chloride will give A. CH3COCL B. ClCH2COOH C. Cl3CCOOH D. Cl2CHCOOH?
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8 May, 2022
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Hauwababy16
4 years ago
Stress=Force/area
Force=25×10=250N
Area=0.4m²
Stress/=250/0.4
=625NI-2
16.535-500/550-500=theta-0/100-0
Thetha=70°C
17.A
