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3 years ago

Anyone know how to do this?

Physics

1 answer:

Gala2k [10]3 years ago

6 0

Answer:

I think, (remember think) it might be 2.0 m/s

Explanation:

If it's wrong I'm truly sorry.

You might be interested in

calcular la longitud de un péndulo que oscila a 10 Hz en santa fe de bogota, sabiendo que en esta ciudad la aceleracion de la gr

cricket20 [7]

Answer:

$L=2.48*10^{-3} m$

Explanation:

The period equation for a pendulum is given by:

$T=2\pi \sqrt{\frac{L}{g}}$

and we know that T = 1/f, where f is the frequency, so we will have:

$\frac{1}{f}=2\pi \sqrt{\frac{L}{g}}$

Now, we just need to solve this equation for L.

$\frac{1}{2\pi f}=\sqrt{\frac{L}{g}}$

$L=\frac{g}{(2\pi f)^{2}}$

g is the gravity in Bogota (g=9.78 m/s^{2})
f is 10 Hz
L is the lenght of the pendulum

$L=\frac{9.78}{(2\pi*10)^{2}}$

$L=2.48*10^{-3} m$

I hope it helps you!

5 0

3 years ago

When might a scientist use a model?

Savatey [412]

For the writer, scientific models are paradigms of set of patterns that is assumed to happen in a particular situation or circumstance which is why it was created and modeled, to explain a certain phenomenon. Take for instance the biogeochemical cycle model –water cycle. The water cycle model involves the different process which was observed happen as the current cycle has been experimented and predicted to happen again with the same process. 

Models can represent things that are too small to see. Scientists rely on models to represent concepts and processes in physical science because models can represent things that are too small to see. In fact, they are actually used to give a better perspective of what is occurring on these hidden to the naked eye matters –which may include atoms, cells, and entities unseen and latent. It gives scientists the ideas and structure, restructure, integrate and ponder on new hypothesis on these matters.

4 0

4 years ago

An arch is in the shape of a parabola with its vertex at the top. It has a span of 100 feet and a maximum height of 40 feet. Fin

nexus9112 [7]

Answer:36.4 ft

Explanation:

Given

Span of Parabola $L=100 ft$

Maximum height $h=40$

suppose Parabola is of type

$(x-x_0)^2=-4a(y-y_0)$

where $x_0,y_0$ is the center of parabola

$x_0=0, y_0=40$

$x^2=-4a(y-40)$

at $y=0$

$x^2=-4a\times (-40)$

$x^2=160a$

$x=\pm \sqrt{160a}$

and it is given, $2x=100$

$x=50$

$\sqrt{160a}=50$

$a=15.625$

thus $x^2=-4a(y-40)$

at $x=15$

$15^2=-4\times 15.625(y-40)$

$y=36.4 ft$

4 0

3 years ago

Please help on this one?

SSSSS [86.1K]

I think it would be near the sun due.to high rays of sun

8 0

3 years ago

Read 2 more answers

How far must you be from a 110 W speaker to have an intensity of 0.0439 W/m^2? (Treat the speaker as a point source.)

Lina20 [59]

Answer:

$d=14.12m$

Explanation:

Assume a point sound source that emits a sound power P (in W) evenly in all directions of space. Let us also assume that the medium does not absorb this sound power when it passes through it. At a distance d from the source this power will have been evenly distributed over the surface of a sphere of radius d. Therefore, the acoustic intensity I at distance d will be worth:

$I=\frac{P}{4\pi d^{2}}$

This is the expression of the so-called law of the square of distance: "the intensity is inversely proportional to the square of the distance to the source (considered punctual)".

$I=0.0439 \frac{W}{ m^{2}}$

$P=110W$

$d=\sqrt { \frac{P}{4 \pi\\I}$

$d=\sqrt{ \frac{110}{ 4\pi (0,0439)} }$

$d=\sqrt{{199.39}$

$d=14.12m$

3 0

3 years ago