40 million
1. Approximately how many people watch the March Madness tournament? There are more than 140 million that watch March Madness.
Hey again!
Ok..
Now... The melting Point of this solid is 90°C.
Meaning That as soon as it gets to this temp... It STARTS Melting.
So at that temp... It still has some solid parts in it.
You can say its a Solid Liquid Mixture.
Additional Heat being applied at that point is not raising the temperature;rather its used in breaking the bonds in the solid. This is the Fusion stage.
After Fusion...It'd then Be a Pure Liquid with no solids in it.
So
Q'=MC∆0----- This is the heat needed to take the solid's temp from 30°c - 90°c
Q"=ml ----- This is the heat used in breaking the bonds holding the solids in the solid-liquid phase.
So
Q= Q' + Q"
Q= mc∆0 + ml
∆0 = 90°c - 30°c = 60°c
Q= 2.5(390)(60) + (2.5)(4000)
Q=6.9 x 10⁴Joules
The charges align themselves so that the conductor's internal field is zero.
<h3>What occurs if a charged surface is in close proximity to a conducting surface?</h3>
Induced charges are created on the conductor when a charge is brought close to it. The internal free charges of the conductor, however, are gathered throughout its surface because the electric field inside the conductor must be zero in order to defeat the electric field of induced charges.
<h3>What takes place within a conductor?</h3>
A substance that has a lot of free electrons accessible for the flow of current is said to be a conductor. Since there are numerous electrons, a powerful force of repulsion exists between them as well. As a result, the electrons move to lessen their attraction for one another.
To know more about conductor's visit:-
brainly.com/question/18084972
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Consider two aluminum rods of length 1 m, one twice as thick as the other. If a compressive force F is applied to both rods, their lengths are reduced by 
and 
, respectively.The ratio ΔLthick rod/ΔLthin rod is:
a.) =1
b.) <1
c.) >1
Answer:
The ratio is less than 1 i.e 
option B is correct
Explanation:
The Young Modulus of a material is generally calculated with this formula
Where 
is the stress = 
is the strain = 
Making Strain the subject
now in this question we are that the same tension was applied to both wires so
would be constant
Hence
for the two wire we have that
Looking at young modulus formula
Now we are told that a comprehensive force is applied to the wire so for this question
is constant
And given that the length are the same
so
Now we are told that one is that one rod is twice as thick as the other
So it implies that one would have an area that would be two times of the other
Assuming that
So
From the question the length are equal
So
Hence the ratio is less than 1
