centre of square disrance to each corner found by Pythagoras' theorem.
coulombs law used to clculate field of each charge at centre
fields added vectorially for res
Answer:
A body will become positively charged when some electrons will come out from the body.Thus, positive charge is due to deficiency of electrons.
Answer:
An increase in temperature typically increases the rate of reaction. An increase in temperature will raise the average kinetic energy of the reactant molecules. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision.
B.
It can go from very hot to very cold, it depends on the area of the moon and where the sunlight hits.
The power produced is 712.5 W
Explanation:
First of all, we start by finding the work done by the forklift.
The work done on an object pushed in the same direction as the force is given by:

where
F is the magnitude of the force
d is the displacement of the object
In this problem,
F = 475 N is the force applied to raise the box
d = 18 m is the displacement
Substituting,

Now we can calculate the power, which is the ratio between the work done and the time taken:

Here we have,
W = 8550 J
t = 12 s
Substituting,

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