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Rudik [331]
3 years ago
12

Just as optical astronomers observe the visible light emitted by objects such as stars and galaxies, radio astronomers can also

observe the radio waves emitted by these objects, as well as the radio waves emitted by gas and dust. However, radio telescopes are different from optical telescopes in important ways. In general, compared to optical telescopes, radio telescopes are larger. more curved. more expensive. smaller. This is because
Physics
1 answer:
andre [41]3 years ago
4 0

Answer:

Radio telescopes are LARGER than optical telescopes and this is because radio wavelengths  are much longer than optical wavelengths

Explanation:

In general radio telescopes are LARGER than optical telescopes and this is because radio wavelengths  are much longer than optical wavelengths.

The main difference between radio telescopes and other telescopes especially optical telescopes is based on size and wavelength of both telescopes  

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Earth turns on its axis about once every 24 hours. The Earth's equatorial radius is 6.38 x 106 m. If some catastrophe caused Ear
san4es73 [151]

To solve this problem it is necessary to apply the concepts related to the Period of a body and the relationship between angular velocity and linear velocity.

The angular velocity as a function of the period is described as

\omega = \frac{2\pi}{T}

Where,

\omega =Angular velocity

T = Period

At the same time the relationship between Angular velocity and linear velocity is described by the equation.

v = \omega r

Where,

r = Radius

Our values are given as,

T = 24 hours

T = 24hours (\frac{3600s}{1 hour})

T = 86400s

We also know that the radius of the earth (r) is approximately

6.38*10^6m

Usando la ecuación de la velocidad angular entonces tenemos que

\omega = \frac{2\pi}{T}

\omega = \frac{2\pi}{86400}

\omega = 7.272*10^{-5}rad/s

Then the linear velocity would be,

v = \omega *r

xv = \omega *r

v= 463.96m/s

The speed would Earth's inhabitants who live at the equator go flying off Earth's surface is  463.96

3 0
3 years ago
Hi Hi. How are you all?
kap26 [50]

Answer:

Amazing Thanks. What about u?

Explanation:

7 0
3 years ago
Read 2 more answers
A 420N force act on a 400N object, and the force is from the north.
belka [17]

Answer:

I believe its forward or south :D

Explanation:

7 0
3 years ago
List five objects in your daily life that produce sounds with a high pitch and five that produce sounds with a low pitch.
drek231 [11]

Answer:

Explanation:

High pitch:

-birds chirping

-nails on a chalkboard

-flies buzzing

-children squealing

-whistle

Low pitch:

-thunder

-dogs barking

- earthquakes

-  bass drum,

-cannon shot,

8 0
3 years ago
A new planet is discovered that has twice the Earth's mass and twice the Earth's radius. On the surface of this new planet a per
kirza4 [7]

Answer:

option B

Explanation:

Radius of new planet,R' = 2R

Mass of the earth, M' = 2 M

R and M is the Radius and Mass of the earth.

Weight of the person on earth = 500 N

Weight of the person in the new planet = ?

We know acceleration due to gravity is calculated by using formula

   g = \dfrac{GM}{R^2}

now, acceleration due to gravity on the new planet

   g' = \dfrac{GM'}{R'^2}

   g' = \dfrac{G(2M)}{(2R)^2}

   g' =\dfrac{1}{2} \dfrac{GM}{R^2}

   g' =\dfrac{g}{2}

here acceleration due to gravity is half in new planet, so weight will also be half on the new planet.

Weight on the new plane is equal to \dfrac{500}{2} = 250 N

correct answer is option B

5 0
3 years ago
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