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3 years ago

Can someone plz help me with this I don't get it

Mathematics

1 answer:

frutty [35]3 years ago

7 0

The answer is 26

Explanation:
It’s easy

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The electric field in the xy-plane due to an infinite line of charge along the z-axis is a gradient field with a potential fun

Olenka [21]

Answer:

c(x,y)/(x²+y²)

Step-by-step explanation:

Since E(x,y) = -∇V (x,y ) and V(x,y) =c ln (ro/√ x²+y²)

Let ro/√(x²+y²) = u and √(x²+y²) = v

dV/du = c/u = c√(x²+y²)/ro,

du/dv = -ro/(x²+y²) = -ro/² and dv/dx = x/√(x²+y²)

Using the chain rule,

So dV/dx = dV/du × du/dv × dv/dx

= c√(x²+y²)/ro × -ro/(x²+y²) × x/√(x²+y²)

dV/dx = -cx/(x²+y²)

- dV/dx = -(-cx/(x²+y²)) = cx/(x²+y²)

Also, dv/dy = y/√(x²+y²)

Using the chain rule

dV/dy = dV/du × du/dv × dv/dy

= c√(x²+y²)/ro × -ro/(x²+y²) × y/√(x²+y²)

dV/dy = -cy/(x²+y²)

- dV/dy = -(-cy/(x²+y²)) = cy/(x²+y²)

E(x,y) = -∇V (x,y )

= -(dV/dx)i + [-(dV/dy)]j

= [cx/(x²+y²)]i +[ cy/(x²+y²)]j

= c(x,y)/(x²+y²)

3 0

3 years ago

STALIN [3.7K]

Answer:

answer is I'm guessing B.

8 0

3 years ago

Square root of 144 X^7 Y^5

LekaFEV [45]

The first step to solving this is to factor out the first perfect square
$\sqrt{12^{2} x^{7} y^{5} }$
now factor out the second perfect square
$\sqrt{ 12^{2} x^{6} X x y^{5} }$
then factor out the second perfect square
$\sqrt{ 12^{2} x^{6} X x y^{4} X y}$
the root of a product is equal to the product of the roots of each factor
$\sqrt{ 12^{2} }$ $\sqrt{ x^{6} }$ $\sqrt{ y^{4} }$ $\sqrt{xy}$
reduce the index of the radical and exponent with 2 of the first square root
12 $\sqrt{ x^{6} }$ $\sqrt{ y^{4} }$ $\sqrt{xy}$
reduce the index of the radical and exponent with 2 of the second square root
12x³ $\sqrt{ y^{4} }$ $\sqrt{xy}$
reduce the index of the radical and exponent with 2 of the third square root
12x³y² $\sqrt{xy}$
this means that the correct answer to your question is 12x³y² $\sqrt{xy}$ .
let me know if you have any further questions
:)

4 0

4 years ago

Factor the quadratic and determine the zeros F(x)=x^2-3-40

vagabundo [1.1K]

-8 and 5 is the answer

3 0

3 years ago

Write a word phrase that can be represented by m + 25.

MA_775_DIABLO [31]

Answer:

25 more than a number m

Step-by-step explanation:

Let's evaluate each of the given options:

A. The difference of 25 and m.

This phrase can be represented by 25 - m, therefore the option is incorrect.

B. 25 less than a number m.

This phrase can be represented by m-25, therefore the option is incorrect.

C. 25 more than a number m.

This phrase can be represented by m+25, therefore the option is correct.

D. The quotiend of a number m and 25

This phrase can be represented by m/25, therefore the option is incorrect.

4 0

3 years ago