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3 years ago

11

Que es un patrimonio histórico Nacional

1 answer:

Musya8 [376]3 years ago

7 0

Answer:

yes

Explanation

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Why does a satellite in a circular orbit travel at a constant speed? why does a satellite in a circular orbit travel at a consta

motikmotik

Why does a satellite in a circular orbit travel at a constant speed? why does a satellite in a circular orbit travel at a constant speed? there is a force acting opposite to the direction of the motion of the satellite. there is no component of force acting along the direction of motion of the satellite. the net force acting on the satellite is zero. the gravitational force acting on the satellite is balanced by the centrifugal force acting on the satellite?
..b.25

6 0

3 years ago

A particular spiral galaxy can be approximated by a thin disk-like volume 62 Thousand Light Years in radius and 7 Hundred Light

SVETLANKA909090 [29]

Answer:

Approximate linear dimension is 2 light years.

Explanation:

Radius of the spiral galaxy r = 62000 LY

Thickness of the galaxy h = 700 LY

Volume of the galaxy = πr²h

= (3.14)(62000)²(700)

= (3.14)(62)²(7)(10)⁸

= 84568×10⁸

= $8.45\times 10^{12}$ (LY)³

Since galaxy contains number of stars = 1078 billion stars ≈ $1.078\times 10^{12}$

Now volume covered by each star of the galaxy = $\frac{\text{Total volume of the galaxy}}{\text{Number of stars}}$

= $\frac{8.45\times 10^{12} }{1.078\times 10^{12}}$

= 7.839 Light Years

Now the linear dimension across the volume

= $(\text{Average volume per star})^{\frac{1}{3}}$

= $(7.839)^{\frac{1}{3}}$

= 1.99 LY

≈ 2 Light Years

Therefore, approximate linear dimension is 2 light years.

8 0

3 years ago

What is a unit for gas particle pressure? (Choose all that apply)<br> torr<br> kPa<br> mm Hg<br> atm

Pie

Answer:

pascals

Explanation:

8 0

3 years ago

Read 2 more answers

What is kinetic energy of 6 kg bowling ball if it is going 6.1 m/s

weqwewe [10]

Answer:111.63 joules

Explanation:

Kinetic energy=(massx(velocity)^2)/2

Kinetic energy=(6×(6.1)^2)/2

Kinetic energy=(6×37.21)/2

Kinetic energy=223.26/2

Kinetic energy=111.63 joules

7 0

3 years ago

Coherent light with wavelength 610 nm passes through two very narrow slits, and theinterference pattern is observed on a screen

andriy [413]

Answer:

= 1220 nm

= 1.22 μm

Explanation:

given data:

wavelength $\lambda = 610 nm = 610\times 10 ^{-9} m$

distance of screen from slits D = 3 m

1st order bright fringe is 4.84 mm

condition for 1 st bright is

$d sin \theta =\lambda$ ---( 1)

and $tan \theta = \frac{y}{ D}$

$\theta = tan^{-1}\frac{(y }{D})$

= 0.0924 degrees

plug theta value in equation 1 we get

$d sin ( 0.0924) = 610 \times 10 ^{-9}$

$d = 3.78\times 10^{-4} m$

condition for 1 st dark fringe

$d sin \theta =\frac{λ'}{2}$

$\lambda '= 2 d sin\theta$

= 2λ since from eq (1)

= 1220 nm

= 1.22 μm

7 0

3 years ago