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Physics
A block of mass m is at rest under the action of force F against a wall as shown in figure. Which of the following statement is incorrect? (a) f = mg [Where f is the friction force] (b) F = N [Where N is the normal force] (c) F will not produce torque (d) N will not produce torque
Chemistry
Compound (X) on reduction with LiAlH₄ gives a hydride (Y) containing 21.72% hydrogen along with other products. The compound (Y) reacts with air explosively resulting in boron trioxide. Identify (X) and (Y). Give balanced reactions involved in the formation of (Y) and its reaction with air. Draw the structure of (Y).
Mathematics
Let g (x) be a polynomial of degree one and f (x) be defined by Find the continuous function f (x) satisfying f¹ (1) = f (-1).