(-200) ÷ 10 = ____

The temperature on Fahrenheit scale corresponding to 200°C is ______

Pollen grains that would easily germinate on stigma are found to germinate in vitro, only when 10-200 p p m of boric acid is added. This suggest that

Two particles A and B having charges of +2.00 xx 10^(-6) C and of - 4.00xx 10^(-6) respectively are held fixed at a separation of 20.0 cm . Locate the point(s) on the line AB where (a) the electric field is zero (b) the electric potential is zero.

the pressure of a gas change linearly with volume from 10kPa, 200 cc to 50 kPa, 50 cc. calculate the work done by the gas.

If varphi(alpha,beta)=|cosalpha-s inalpha1s inalphacosalpha1"cos"(alpha+beta)-sin(alpha+beta)1| , then f(300 , 200)=f(400 , 200) f(200 , 400)=f(200 , 600) f(100 , 200)=f(200 , 200) none of these

A steel rod is rigidly clamped at its two ends. The rod is under zero tension at 20^@C . If the temperature rises to 100^@ C , what force will the rod exert on one of the clapms? Area of cross section of the rod = 2.00 mm^2 . Coefficient of linear expansion of steel = 12.0 xx 10^(-6)C^(-1) and Young's modulus of steel 2.00 xx 10^(11) N m^(-2) .