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Naddika [18.5K]
3 years ago
13

A disk with a radius of R is oriented with its normal unit vector at an angle ? with respect to a uniform electric field. Which

of the following would result in an increase in the electric flux through the disk? Check all that apply?
A. increasing the area of the disk
B. decreasing the given orientation angle of the disk
C. decreasing the strength of the electric field
D. increasing the given orientation angle of the disk, but not exceeding an angle of 90
Mathematics
1 answer:
givi [52]3 years ago
4 0
It would have to be D: increasing the given orientation angle of the disk, but not exceeding and angle or90!
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A box of baseball cards is $25.00 with %15 off. What is the sale price of the box of cards? In other words, how much is it after
yan [13]

Answer:

21.25

Step-by-step explanation:

you would multiply 25 by 0.15 to get the percent being taken off then subtract that from your original price

8 0
3 years ago
Do you agree with the statement that " cubic functions must have at least 1 x-intercept but not more than 3, whereas quadratic f
vladimir2022 [97]

Answer:

Yes, I agree

Step-by-step explanation:

For the cubic function

A cubic function is represented as:

f(x)=ax^3+bx^2+cx+d

A cubic function may have 1, 2 or 3 x intercepts. This is shown below

For 3 x intercepts

y = x^3 - x

Equate y to 0

x^3 - x = 0

Expand

x(x^2 - 1) = 0

Express x^2 - 1 as difference of two squares

x(x - 1)(x +1 ) = 0

<em>x = 0 or 1 or -1</em>

For 2 x intercepts

y = x^3 - x

y  =(x-5)^2)(x+7)

Equate y to 0

(x-5)^2(x+7) = 0

Expand

(x-5)(x-5)(x+7) = 0

<em>x= 5 or x = -7</em>

For 1 x intercept

y = x^3

Equate y to 0

x^3 = 0

Take cube roots of both sides

x = 0

It has been shown above that a cubic function may have 1, 2 or 3.

So, I agree to the statement

For the quadratic function

A quadratic function will not have any x intercept when the function can not be factorized;

E.g.

y = x^2 + x + 17

<em>The above function has no x intercept.</em>

A quadratic function will have at least 1 x intercept when the function can be factorized;

E.g.

y = x^2- 6x + 9

Equate y to 0

x^2- 6x + 9 = 0

Expand

x^2 - 3x - 3x + 9 = 0

(x - 3)(x-3) = 0

x = 3

We've shown that a quadratic may have no x intercept, and it may also have x intercept(s)

Hence, I agree to both statement

3 0
3 years ago
What expression is equivalent to 12y + (7y)(3)
Lemur [1.5K]

Answer:

I got 33y

Step-by-step explanation:

hi if its right but here

4 0
3 years ago
Read 2 more answers
Alex got 27 questions out of 30 correct. what present of the questions did he get correct?(use fish method)
Novosadov [1.4K]

if we take 30 to be the 100%, what is 27 off of it in percentage?

\begin{array}{ccll} amount&\%\\ \cline{1-2} 30 & 100\\ 27& x \end{array} \implies \cfrac{30}{27}=\cfrac{100}{x} \\\\\\ \cfrac{10}{9}=\cfrac{100}{x}\implies 10x=900\implies x=\cfrac{900}{10}\implies x=90

4 0
2 years ago
The bananas are $.15 per pound and I want to buy 4 pounds, how much would I pay
Paladinen [302]
$.75 bc 15 x 4 is 75 so that would make 75¢ or $.75
4 0
2 years ago
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