Glacial deposits related to streams of water are called?

The weight of an object is 10N when it is at a distance of 6.4 x 10'm from the center of the earth. What will be its weight if i

Afina-wow [57]

Explanation:

At the center its weight is zero. Or you can argue by symmetry: if the weight is not zero, in what direction would it act?

7 0

3 years ago

When analyzing the speeds of stars far from the galactic center, the orbital speeds of stars ___________ as distance increases f

KiRa [710]

Answer: is constant

Explanation:

In order to analyze the velocity of the stars within a galaxy, the <u>galaxy rotation curves</u> (developed by the American astronomer Vera Rubin) are used. These graphs are elaborated as a scatter diagram in which the orbital velocity of the stars present in a galaxy is represented on the Y axis and the distance of these stars to the center of the galaxy on the X axis.

Thanks to this diagram, it has been possible to observe a characteristic behavior in the rotation speed of the stars (and gas) present in the galaxies, which differs from the rules of the orbital movement of the planetary systems postulated by Newton and Kepler.

This means that in these galaxy rotation curves it has been observed that the rotation speed of stars and gas is "constant", regardless of the distance to the center of the galaxy. This discrepancy and these results were then used to demonstrate the existence of dark matter in the universe.

6 0

3 years ago

Geographers show population change over time by using: A. population pyramids B. death rates C. demography charts D. standard of

Ad libitum [116K]

I'm pretty sure they would show B. Death rates. Hope this helps!

8 0

3 years ago

The luminosity of a star changes throughout its life. For a star of 1Msun, rank the stages a. Red against just before the helium

MrRa [10]

Answer:

d. Proto-star at the end of the Hayashi track.
c. On the main sequence.
a. Red against just before the helium flash
b. Horizontal branch
e. White dwarf

Explanation:

The protostar is a new star that is formed at the end of the Hayashi track and is luminosity temperature relationship of infant stars that are less than M 3. The protostar ends its period and becomes a Tauri star that is extremely luminous.

After which the main sequence of the stars are formed is the next stage in stellar evolution and is dependent on its mass like the sun after this period the star turn red as it has a hydrogen-rich core and it starts to branch out displaying extreme density.

The last stage is the white dwarf star as the star has degenerate and left is the exhaust core which is very dense.

8 0

3 years ago

Can anyone come up with a unique plant food product that doesn’t exist be sure to include a description and the price of the pro

den301095 [7]

Answer:

should in case you see him tell tell the message.

8 0

2 years ago