Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost m
1 answer:
Answer:
a
b
c
Explanation:
From the question we are told that
The power used by incandescent bulb
The power used by Compact fluorescent bulb
The life span of Compact fluorescent bulb is
The prices of Compact fluorescent bulb is
The prices of incandescent bulb is
The life span of incandescent bulb is
The cost of electricity is
The duration of daily bulb usage is
Generally 3 years of bulb usage in hours is mathematically evaluated as
=>
=>
Generally the cost to power a 23W bulb for the above duration is mathematically represented as
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=>
The number of Compact fluorescent bulbs required to achieve this about of time is mathematically represented as
=>
=>
=>
The total cost of usage for the Compact fluorescent bulb is mathematically represented as
=>
=>
The number of incandescent bulbs required to achieve this about of time is mathematically represented as
=>
=>
Generally the cost to power a 100W bulb for the above duration is mathematically represented as
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=>
The total cost of usage for the incandescent bulbs is mathematically represented as
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=>
Generally the total amount saved is mathematically represented as
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Generally the resistance of the Compact fluorescent bulb is
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Answer:
Explanation:
Given
Height of ceiling is
Initial speed of Putty
Speed of Putty just before it strike the ceiling is given by
where v=final velocity
u=initial velocity
a=acceleration
s=displacement
time taken by putty to reach the ceiling
Answer:
Final temperature is 295K
Explanation:
Where the sample of copper is placed in the water, the heat transferred from the copper is equal that the heat absorbed by the water.
The heat transferred from the copper is:
C××mass×ΔT
Where C is molar heat capacity of copper (24,5J/molK)
Mass is 25,0g
And ΔT is final temperature - initial temperature (X-363K)
Also, the heat absorbed by the water is:
-C××mass×ΔT
Where C is molar heat capacity of water (75,2J/molK)
Mass is 100,0g
And ΔT is final temperature - initial temperature (X-293K)
As heat transferred is equal to heat absorbed:
24,5J/molK××25,0g×(X-363K) = -75,2J/molK×
×100,0g× (X-293K)
9,64X J/K - 3499J = - 417X J/K + 122273J
426,64X J/K = 125772 J
<em>X = 295K</em>
<em></em>
Final temperature is 295K
I hope it helps!
Complete Question
The complete question is shown on the uploaded image
Answer:
The nuclei experience a force that will move it to the right of the conductor rod while the electrons experience a force that will move it to the left side of the conductor rod.
Explanation:
The force that act on the charges(both the positive and the negative charge ) is Mathematically expressed as
F = qE => E = F/q
where F is the force, q is the charge and E is the electric field
we can see that the force is directly proportional to the electric field,so an increase in the electric field would increase the force.
we can also see that the electric field is given as force per unit charge and generally the direction of this field is taken to be the direction of the force it would exert on a positive test charge
Now from the question we are being told that the external electric field is the direction of the positive x axis
Hence this field would drive the positive charge i.e the nuclei to the right.
In order to further explain let consider this
Generally the electric field is always radially outward originating from a positive point charge and radially in toward a negative point charge.
what this means for this question, is that the positive point charge is on the left side of the electric field while the negative point charge is at the right side of the field.
According to Coulomb's law which states that unlike term attract while like terms repel, it means that the electron would move to the left of the conductor rod while the nuclei would move to the right side of the conductor rod.
