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3 years ago

Can someone explain why light from distant galaxies is projected. Plz

1 answer:

8 0

I'm not exactly sure what you mean by 'projected'. The light from other galaxies
is the light generated by all the stars in that galaxy. It comes out of a distant star,
spends millions of years traveling straight through space, and millions of years
later, a tiny bit of that same light zooms straight into your eye. Practically nothing
happened to it on the way between the star in the distant galaxy and the back of
your eye. Pretty amazing !

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Can someone help me with this question?

padilas [110]

Answer:

it is 5

Explanation:

5 0

3 years ago

Other scientists left blanks in their tables. What did Mendeleev do that others did not

Sonbull [250]

Hope this helps:

(if so please mark brainlest!!)

"Mendeleev arranged the elements in the order of increasing atomic mass, the properties where repeated. And he corrected the known atomic masses of some elements and used the patterns in his table to predict the properties of the elements he thought must exist but had not been discovered yet"

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3 years ago

An object is located 5.0 cm from a concave mirror. The focal length is 15.0 cm. What is the image distance? Use the equation att

Fiesta28 [93]

Answer:

-7.5 cm

Explanation:

OK so in the equation they're having you use the variables are:

$d_o = 5.0 cm\\\\f = 15.0 cm\\\\d_i = ?$

So we simply plug in the variables:

$d_i = \frac{d_of}{d_o-f} \\\\d_i = \frac{5.0 * 15.0}{5.0 - 15.0}\\\\d_i = \frac{75}{-10}\\\\d_i = -7.5 cm$

6 0

3 years ago

A ball is attached to the end of a string. A child holds the other end of the string and twirls it so the ball travels in a circ

Rashid [163]

Answer:

First option

Explanation:

If the ball is running in a circular motion then its velocity v will be tangency to the circular path.

In this problem the centripetal force that allows the circular movement is the tension T of the rope to which the ball is tied, if the child releases the rope then this tension becomes equal to zero and the circular movement is interrupted.

As the speed v of the ball is always tangential to the circumference at any point of the same, then at the instant in which the rope is released, the ball will follow the same trajectory that it had at that moment, that is, tangential to the circumference.

Observe the attached image.

Therefore the answe is: tangent to the circle

5 0

3 years ago

What is the average speed of a commercial jet that travels from New York to Los Angeles 4800 kilometer in six hours

Alex Ar [27]

Answer: 800 km/h

Explanation:

Use equation for average speed

V=S/t

where S is distance

t is time

S=4800Km

t=6h

---------

V=S/t

V=4800Km/6h=800 Km/h

6 0

3 years ago