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3 years ago

Calculamos la fuerza de atracción gravitatoria entre dos cuerpos de 12kg y 30kg separados 50cm

Mathematics

1 answer:

Dovator [93]3 years ago

3 0

Es 42kg porque cuando lo suma te da eso pruebalo
perdon si no esta bien ice lomasque pude

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Two gears are connected and are rotating simultaneously. The smaller gear has a radius of 3 inches, and the larger gear has a ra

Dovator [93]

Circumference of a circle is C = 2πr.

part 1)

so the radius of the smaller gear is 3 inches, so after a full rotation, namely a revolution, the smaller gear has covered an arc of 2π(3), or 6π.

what angle has the larger gear of 7 inches in radius, has it covered with an arc of 6π?

$\bf \textit{arc's length}\\\\
s=r\theta ~~
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad radians\\
------\\
s=6\pi \\
r=7
\end{cases}\implies 6\pi =7\theta \implies \cfrac{6\pi }{7}=\theta$

part 2)

since the larger gear has a radius of 7, in a revolution it will have an arc of 2π(7), or 14π.

now, we know the smaller gear does a 6π arc in a revolution, how many revolutions will it do in an arc of 14π?

$\bf \begin{array}{ccll}
arc&revolution\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
6\pi &1\\
14\pi &x
\end{array}\implies \cfrac{6\pi }{14\pi }=\cfrac{1}{x}\implies \cfrac{3}{7}=\cfrac{1}{x}\implies x=\cfrac{7}{3}$

6 0

3 years ago

Someone please help me in math

Helga [31]

I just solved it and I'm pretty sure its only one solution, I took the bottom equation multiplied it by -3 then i canceled out the equations and got 9. So that would make it C.

3 0

3 years ago

Read 2 more answers

Classify the decimal expansion of each fraction as a terminating decimal or a repeating decimal.

Salsk061 [2.6K]

Answer:

repeating-- terminating-- terminating-- repeating.

Step-by-step explanation:

5 0

3 years ago

What is the formula for Slope-Intercept Form of the Line

Andrej [43]

It's not the slope-intercept form of the line.

It's the slope-intercept form of the line's equation.

<em> Y = mX + B</em>

'X' is the slope of the line

'B' is the y-intercept of the line

8 0

3 years ago

Read 2 more answers

A town has a population of 6000 and grows at 3.5% every year. To the nearest year, how long will it be until the population will

kotykmax [81]

Answer:

5 years.

Step-by-step explanation:

Every year the population increases by a factor 103.5% or 1.035.

The equation relating population and time in years is:

P = 6000(1.035)^t (This is an example of exponential growth)

So we have:

7100 = 6000(1.035)^t

(1.035)^t = 7100/6000

(1.035)^t = 1.1833

t ln 1.035 = ln 1.1833

t = ln 1.1833/ln 1.035

= 4.89.

7 0

4 years ago