If you are chilly outside the shower stall, why do you feel warm after the bath if you stay in the bathroom? `(AS_7)`

Can you think of two particles which do not exert gravitational force on each other why? (AS_(2))

(a) A closed loop is held stationary in the magnetic field between the north and south poles of two permanent magnets held fixed. Can we hope to generate current in the loop by using very strong magnets ? (b) A closed loop moves normal to the constant electric field between the plates of a large capacitor. Is a current induced in the loop (i) when it is wholly inside the region between the capacitor plates (ii) when it is partially outside the plates of the capacitor? The electric field is normal to the plane of the loop. (c) A rectangular loop and a circular loop are moving out of a uniform magnetic field region (Figure) to a field-free region with a constant velocity v. In which loop do you expect the induced emf to be constant during the passage out of the field region? The field is normal to the loops.

Two astronauts A and B connected with a rope stay stationary in free space relative to their spaceship. Mass of A is more than that of B and the rope is straight. Astronaut A statas pulling the rope but astronaut B does not. If you were the third astronaut in the spaceship, what do you observe?

Aim: To study the reaction between calcium oxide and water. Activity: Take some quick lime (Calcium oxide - CaO) in a beaker. Add water to it slowly. Touch the beaker as shown in the figure 1.3. What do you feel by touching the beaker outside ?

Where do you observe Archimedes principle in daily life ? Give two examples. (AS_(7))