Answer:
It is difficult to magnetize.
Answer:
Explanation:
Given that,
Height of the inclined plane, h = 2.02 m
Final velocity of the object, v = 5.72 m/s
To find,
The moment of inertia of the object.
Solution,
As the object rolls down the inclined plane, its gravitational potential energy gets converted to the kinetic energy along with rotational kinetic energy.
Since,
On rearranging the above equation and finding the value of I as :
So, the moment of inertia of an object that rolls without slipping down is
That would be t<span>he law of conservation of energy.</span>
Answer:
It is made up of iron, steel or any other ferromagnetic substance or ferromagnetic composite, having permanent magnetic properties. The magnet has two poles: a north and a south pole. When you suspend it freely, the magnet aligns itself so that the north pole points towards the magnetic north pole of the earth.
Answer:
(a)
(b)
(c) Impossibly
Explanation:
Given:
- temperature of source reservoir,
- temperature of sink reservoir,
- heat absorbed by the engine,
- heat rejected by the engine,
(a)
Now the maximum theoretical efficiency of the engine:
(b)
Actual efficiency of the heat engine:
(c)
This is impossible because the actual efficiency can never be greater than the ideal (Carnot) efficiency of a heat engine.