What would happen to a ray of light when it enters: - a) glass to water b) water to air?
1 answer:
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Answer:
The value is
Explanation:
From the question we are told that
The power rating of the stove is
The duration of its use everyday is
The rating of the light bulbs is
The number is
The power rating of the total bulb is
The duration of its use everyday is
The power rating of miscellaneous appliance
The duration of its use everyday is
The power rating of hot water
The duration of its use everyday is
Generally the total electrical energy used in 1 month is mathematically represented as
=>
=>
=>
Generally the monthly electricity bill is mathematically represented as
=>
Answer:
-0.045 N, they will attract each other
Explanation:
The strength of the electrostatic force exerted on a charge is given by
where
q is the magnitude of the charge
E is the electric field magnitude
In this problem,
(negative because inward)
So the strength of the electrostatic force is
Moreover, the charge will be attracted towards the source of the electric field. In fact, the text says that the electric field points inward: this means that the source charge is negative, so the other charge (which is positive) is attracted towards it.