Answer:
E(1m) = 4*E(2m)
Explanation:
By definition, an electric field is the electric force per unit charge, produced by a given charge distribution.
For a point charge, it is the electric force produced by the charge, over a positive test charge located at a distance d from the charge.
So, the E at a point 2 m away from the charge q, can be expressed as follows:
At a point 1 m from the charge, the value of E is given by the following equation:
As it can be easily seen, the magnitude of the electric field at 1 m from the charge creating it, is 4 times larger than the one at 2 m.
This is due to the electrostatic force obeys an inverse-square law, consequence of our universe be three-dimensional.
Answer:32m
Explanation:note:a=acceleration due to gravity=10m/s2
-- An A300 Airbus commercial jet airliner, loaded with passengers, cargo,
and flight crew, cruising in a straight line, at 35,000 ft altitude, at a constant
speed of 530 miles per hour.
Answer:
Double the current
Explanation:
The energy delivered by the heater is related to the current by the following relation:
E=
let R * t = k ( ∴ R and t both are constant)
so E= k
Now let:
E2= k I₂^2
E2= 4E
⇒ k I₂^2= 4* k
Cancel same terms on both sides.
I₂^2= 4*
taking square-root on both sides.
√I₂^2 = √4* I^2
⇒I₂= 2I
If we double the current the energy delivered each minute be 4E.
The choice of path should make no difference. The work should depend only on the end points and not on the route between them. But just to make sure, could we please have a look at the accompanying figure ?