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For a solid to change its state of matter into liquid, energy is applied or heat is being used. With a solid, particles are very compacted and still, with a liquid they are not as compacted but can still take a defined shape.
Ans:
12500 N/C
Explanation:
Side of square, a = 2.42 m
q = 4.25 x 10^-6 C
The formula for the electric field is given by

where, K be the constant = 9 x 10^9 Nm^2/c^2 and r be the distance between the two charges
According to the diagram
BD = 
where, a be the side of the square
So, Electric field at B due to charge at A


EA = 6531.32 N/C
Electric field at B due to charge at C


Ec = 6531.32 N/C
Electric field at B due to charge at D


ED = 3265.66 N/C
Now resolve the components along X axis and Y axis
Ex = EA + ED Cos 45 = 6531.32 + 3265.66 x 0.707 = 8840.5 N/C
Ey = Ec + ED Sin 45 = 6531.32 + 3265.66 x 0.707 = 8840.5 N/C
The resultant electric field at B is given by


E = 12500 N/C
Explanation:
Answer:
0.075A
Explanation:
V = IR
where V - voltage, I - current, R - resistance
Hence, 18 = I * 240
I = 18/240
I = 0.075A
The apparent change in the frequency of a sound caused by the motion of either The Listener or the source of the sound