The level of greenhouse gases in our atmosphere would decrease, due to less automobiles.
Answer:

Explanation:
Position of charge 3q is x = 0
position of charge -2q is x = a
so here we know that
when two charges are of opposite nature then the electric field will be zero on the line joining the two charges at the position near to smaller magnitude charge
So here the electric field will be zero if the field due to 3q is counterbalanced by field due to -2q
so here we can say





so we will have

so the x coordinate of this position is given as

Answer:
262.5 Nm
Explanation:
Torque is the rate of change of angular momentum.
Hence, we have

Δ<em>L</em> is the change in angular momentum.
Using values in the question,

Answer:
Explanation:
Given
mass of tin 
Also we know that
specific heat of tin 
Melting Point of Tin 
Heat required to raise the temperature of 100 gm tin is given by

where 




The electric currents induces a magnetic field. They changing magnetic field can be induce an electric current.