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3 years ago

Please answer I need this answer fast please

Mathematics

2 answers:

Fiesta28 [93]3 years ago

4 0

its just a basic logarithmic law.

Anit [1.1K]3 years ago

4 0

Answer: D!

Explanation: Simply look up the rules of logarithms. This rule will show.

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1. Two object accumulated a charge of

In-s [12.5K]

Answer:

The magnitude of the electric force between these two objects

will be: 181.274 N.

i.e. F $=181.274$ N

Step-by-step explanation:

Two object accumulated a charge of 4.5 μC and another a charge of 2.8 μC.

q₁ = 4.5 μC = 4.5 × 10⁻⁶ C

q₂ = 2.8 μC = 2.8 × 10⁻⁶ C

separated distance = d = 2.5 cm

Calculating the magnitude of the force between two charged objects using the formula:

$F = \frac{1}{4\pi \epsilon_0}\frac{q_1 q_2}{r^2}$

$=\:\frac{4.5\times \:\:10^{-6}\:\times \:\:2.8\:\times \:\:10^{-6}}{4\:\times \:\left(3.14\right)\:\times \:\left(8.85\times \:10^{-12}\right)\times \left(2.5\times \:\:10^{-2}\right)^2}$

$=\frac{10^{-12}\times \:12.6}{10^{-12}\times \:4\times \:8.85\pi \left(10^{-2}\times \:2.5\right)^2}$ ∵ $4.5\times \:10^{-6}\times \:2.8\times \:10^{-6}=10^{-12}\times \:12.6$

$=\frac{10^{-12}\times \:12.6}{10^{-12}\times \:35.4\pi \left(10^{-2}\times \:2.5\right)^2}$ ∵ $\mathrm{Multiply\:the\:numbers:}\:4\times \:8.85=35.4$

$\mathrm{Cancel\:the\:common\:factor:}\:10^{-12}$

$=\frac{12.6}{35.4\pi \left(10^{-2}\times \:2.5\right)^2}$

$=\frac{12.6}{0.025^2\times \:35.4\pi }$ ∵ $\left(10^{-2}\times \:2.5\right)^2=0.025^2$

$=\frac{12.6}{0.022125\pi }$ ∵ $35.4\pi\times 0.025^2=0.022125\pi$

$=\frac{12.6}{0.06950 }$

F $=181.274$ N

Therefore, the magnitude of the electric force between these two objects will be: 181.274 N.

i.e. F $=181.274$ N

7 0

3 years ago

What is pythagoras in mathematics

V125BC [204]

Answer:

Pythagorean theorem, the well-known geometric theorem that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle)—or, in familiar algebraic notation, a2 + b2 = c2.

Step-by-step explanation:

hope this helps.

6 0

3 years ago

Read 2 more answers

Latoya has a bookcaes with k shelves. There are 14 books on each shelf. Using k, write an expression for the total number of boo

lidiya [134]

Answer:

Step-by-step explanation:

Pamela has 15 different books. In how many ways can she place her books on two selves so that there is at least one book on each shelf? (Consider the books in each arrangement to be stacked one next to the other, with the first book on each shelf at the left of the shelf.)

Initially, I thought that this would be fairly straight forward. There are two cases where either shelf could be empty and so we would subtract 2 from the total number of permutations which is obviously 15!. It is obvious now that both of these statements are false.

My previous thoughts didn't take into account the fact that there are two shelves and that the books could be stacked in such a way that 5 are on the top shelf and 10 are on the bottom, or 8 on top with 7 on bottom, or any number of other ways. I believe there are 214 ways the books can be distributed amongst the two shelves (keep in mind that each shelf has to have at least one book, 15−1=14) if the ordering of the books didn't matter, but it does. Is this correct?

4 0

4 years ago

Which intervals show f(x) increasing? Check all that apply.

pishuonlain [190]

[–2.5, –1.6):

Check the picture attached. The half closed interval of x, [–2.5, –1.6) is shown with the red line segment.

The part of the graph corresponding to this interval is also shown. f(-2.5)<f(-2,4) so f (x) in not increasing in the first interval.

second interval, [–2, –1]: in this interval, f(x) is decreasing.

(for larger values of x in this interval, the graphs decreases continuously, that is f(x) decreases.

third interval, (–1.6, 0]:

The graph decreases for x from -1,6 up to a value close to -0.5. Then from this value to 0, the graph is constant.

So f(x) is not increasing.

the fourth interval [0, 0.8):

This interval is shown by the purple line segment. Similar to the third case, in this interval for approximately half of the first values of x, f(x) is constant, then in the second half, f(x) is increasing.

(0.8, 2)

in this interval, for larger x, we have larger f(x), so the function is increasing.

Answer: (0.8, 2)

5 0

4 years ago

Read 2 more answers

Which equation has a value less than 2,175?

erik [133]

The correct answer is d- one half x 2,175

Explanation: one half is 0.5 and 0.5 x 2,175 = 1087.5

6 0

3 years ago

Please answer I need this answer fast please​

Please answer I need this answer fast please