(a) Convert to SI unit: 1 J/g °F

(b) Why does 1 g of water at 0°C have 336 J more heat energy than 1 g of ice at 0°C?

Match the columns by choosing the body part and corresponding mechanical lever of the same class.

Ashish, Sameer, Aditya and Mohit were sitting on the terrace of Ashish’s house listening to the songs playing on Aditya’s mobile phone Mohit, sitting in one corner, a little distance away from the others, requests to increase the volume of the songs. But Aditya says the volume is full. Sameer, being a smart guy, gets up, goes into the kitchen, brings an empty steel glass, places the mobile phone inside it and solves the problem. What is the reason for Sameer to keep the mobile phone in the glass?

You are given three resistors of magnitude 3 Ω each. You can join them either in a series or in a parallel combination. How will you arrange them so that the equivalent resistance would become:

(a) maximum

(b) minimum

(Your answer must be accompanied by proper mathematical calculations)