Answer:
Therefore
Number of turns in the solenoid is 19407.
Explanation:
Given:
Strength magnetic field at its center,
B = 7.5 T
length of solenoid = l = 0.26 m
Current, I = 80 A
To Find:
Turn = N = ?
Solution:
If N is the number of turns in the length, the total current through the rectangle is NI. Therefore, Ampere’s law applied to this path gives
Therefore,
Where,
B = Strength of magnetic field
l = Length of solenoid
N = Number of turns
I = Current
Substituting the values we get
Therefore
Number of turns in the solenoid is 19407.
The atmosphere creates a cover over the earth preventing us from seeing space and it’s natural color and the light that is created by the sun reflected on the ocean creates the color that the sky appears to be blue
Answer:
How much energy does it take to melt a 16.87 g ice cube? ΔHfus = 6.02 kJ/mol How much energy does it take to melt a 16.87 g ice cube? = 6.02 kJ/mol
A. 108 kJ
B. 102 kJ
C. 5.64 kJ
D. 936 kJ
E. none of the above
<em>5.64 kJ</em>
Explanation:
The Heat of fusion is the heat energy required to dissolve a given mass of ice at melting point.
<h3>
Step by Step Calculation</h3>
The heat energy required to dissolve ice can be calculated using the expression below;
Q = ΔH x m ...............................................1
where Q is the heat energy required;
ΔH is the heat of fusion for ice;
m is the mole
All the parameters above are provided in the question except m, so to get m we use the molar mass of water (also for ice) which is 18.01528 g/mol
.
<em>This means that 18.01528 g of ice is contained in one mole, therefore the mole for 16.87 g of ice is given as;</em>
m = 0.9364 mole of ices
Now the parameters are complete, we are given;
ΔH = 6.02 kJ/mol
m = 0.9364 mol
Q =?
Substituting into equation 1, we have
Q = 6.02 kJ/mol x 0.9364 mol
Q = 5.64 kJ
<em>Therefore, the energy required to melt 16.87 g of ice is 5.64 kJ</em>
Answer:
maybe make your own lock on the door:) that's what I did when I lived in a place with nosy roomates