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3 years ago

HELP! BRAINLIEST!

Mathematics

1 answer:

love history [14]3 years ago

5 0

Given that,

Charge q₁ = -0.004 C

Charge q₂ = -0.003 C

Distance between charges, d = 3 m

To find,

The electrostatic force between charges.

Solution,

The formula for the electrostatic force is given by :

$F=\dfrac{kq_1q_2}{d^2}\\\\F=\dfrac{9\times 10^9\times 0.004 \times 0.003 }{(3)^2}\\\\=12000\ N$

So, 12000 N of electrostatic force is produced.

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Please help with the top 3 i’ll give u brainliest, what is the volume of the figures below?

jasenka [17]

Answer:

im sorry but i only know the second one, i believe its 224.3

Step-by-step explanation:

8 0

3 years ago

Robert plays cricket. He hit the ball in such a way that it goes up 180 feet

PilotLPTM [1.2K]

Answer:

4 feet per second

Step-by-step explanation:

Hi there!

$v=D/t$ where v is velocity (speed), D is distance and t is time

Plug in the known values (D=180 feet, t=45 seconds)

$v=180/45\\v=4$

Therefore, the speed of the ball is 4 feet per second.

I hope this helps!

4 0

3 years ago

Read 2 more answers

Given that f(x) =x^2-3/3 a) Find f(3) b) Find f'(x) c) Find f'(11)

Ber [7]

A) F(3)=3^2-3:3= 9-3:3=9-1=8
B) ?
C) F(11)= 11^2-3:3=121-1= 120

I think this

6 0

2 years ago

You have 6 reindeer, Prancer, Rudy, Balthazar, Quentin, Jebediah, and Lancer, and you want to have 3 fly your sleigh. You always

velikii [3]

Answer:

120 ways.

Step-by-step explanation:

We have been given that you have 6 reindeer, Prancer, Rudy, Balthazar, Quentin, Jebediah, and Lancer, and you want to have 3 fly your sleigh. You always have your reindeer fly in a single-file line.

We will use permutation formula to solve our given problem as:

$_{r}^{n}\textrm{C}=\frac{n!}{(n-r)!}$

$_{3}^{6}\textrm{C}=\frac{6!}{(6-3)!}$

$_{3}^{6}\textrm{C}=\frac{6\cdot 5\cdot 4\cdot 3!}{3!}$

$_{3}^{6}\textrm{C}=6\cdot 5\cdot 4$

$_{3}^{6}\textrm{C}=120$

Therefore, you can arrange your reindeer in 120 different ways.

5 0

3 years ago

Read 2 more answers

How many ounces of 10% alcohol would need to be mixed with pure rubbing alcohol to get 16

givi [52]

Suppose you add x oz of 10% alcohol to y oz of pure alcohol. Then the mixture has a total volume of x + y oz, and we want to end up with 16 oz so that

x + y = 16

For each oz of the solution 10% used, 0.1 oz of alcohol is contributed, and each oz of pure alcohol contributes 1 oz of alcohol. The mixture is supposed to have a concentration of 14%, which comes out to 0.14*16 = 2.24 oz of alcohol. Then

0.1 x + 1 y = 2.24

Solve for y in both equations:

y = 16 - x

y = 2.24 - 0.1 x

Set them equal to one another and solve for x, then for y.

16 - x = 2.24 - 0.1 x

13.76 = 0.9 x

x = 13.76/0.9 ≈ 15.29

y = 16 - 15.29 ≈ 0.71

So you need about 15.29 oz of 10% alcohol and 0.71 oz of pure alcohol to get the desired mixture.

6 0

4 years ago