c .... work is force x distance as a definition
If you move a magnet through a loop of wire, induction will happen. The more loops you make, the stronger the effect becomes.
1. Take a breaker
2. Put a sieve on it
3. Pour the mixture and shake the sieve gently
4. Wait for the flour to fall. After the flour falls pour the rice from the sieve into other beaker then do experiment again for fair testing(optional)