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Solnce55 [7]
3 years ago
10

Natural selection allows populations to (2 points)

Physics
1 answer:
Dahasolnce [82]3 years ago
3 0
<span>
adapt to a changing environment

</span><span>organisms that possess heritable traits that enable them to better adapt to their environment </span>
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Is the star moving toward earth, away from earth, or is there not enough information provided to determine its motion?
ivanzaharov [21]

If a star is moving towards Earth, shift towards the blue end of the spectrum, this is called blue shift. If the star is moving away from Earth the light from that star will be red and is called red shift .

The faster a star moves towards the earth, the more its light is shifted to higher frequencies. In contrast, if a star is moving away from the earth, its light is shifted to lower frequencies on the color spectrum

if a star is moving towards Earth, it appears to emit light that is shorter in wavelength compared to a source of light that isn't moving. Because shorter wavelengths correspond to a shift towards the blue end of the spectrum, this is called blue shift.

If the star is moving away from Earth, its light will lose energy to reach Earth, therefore the light from that star will be red and is called red shift

learn more about blue shift :

brainly.com/question/5368237?referrer=searchResults

#SPJ4

8 0
1 year ago
Kinetic energy varies jointly as the mass and the square of the velocity. A mass of 1515 grams and velocity of 77 centimeters pe
Alexus [3.1K]

Answer:

The second kinetic energy is 162 J.

Explanation:

Given that,

Mass, m_1=15\ g

Velocity, v_1=7\ cm/s

Kinetic energy, K_1=147\ ergs

Mass, m_2=10\ g

Velocity, v_2=9\ cm/s

We need to find kinetic energy K_2. Kinetic energy is given by :

K=\dfrac{1}{2}mv^2

So,

\dfrac{K_1}{K_2}=\dfrac{m_1}{m_2}\times \dfrac{v_1^2}{v_2^2}\\\\K_2=\dfrac{K_1}{\dfrac{m_1}{m_2}\times \dfrac{v_1^2}{v_2^2}}\\\\K_2=\dfrac{147}{\dfrac{15}{10}\times \dfrac{7^2}{9^2}}\\\\K_2=162\ J

So, the second kinetic energy is 162 J.

4 0
2 years ago
Which statement(s) about neutrons is/are TRUE?
sergey [27]
The answer is A and B


Explanation: the nucleus was viewed as composed of combinations of protons and electrons, the two elementary particles known at the time, but that model presented several experimental and theoretical contradictions.

AND

Protons and neutrons have approximately the same mass, about 1.67 × 10-24 grams.



4 0
3 years ago
Explain how living things such as people and trees are different from non living things such as rocks and tents
Musya8 [376]
The difference between living things and nonliving things is little things that we call is senses like sight, taste, touch, smell, and hearing. For example a human or animal can react to someone or something touching them. For a nonliving thing such as a rock can't react to someone touching them unless u force them to.
5 0
3 years ago
Read 2 more answers
The mass of a golf ball is 45.9 g . If it leaves the tee with a speed of 63.0 m/s , what is its corresponding wavelength?
Fantom [35]

Answer:

\lambda=2.29\times 10^{-34}\ m

Explanation:

Given that,

The mass of a golf ball, m = 45.9 g = 0.0459 kg

Speed of the tee, v = 63 m/s

We need to find the corresponding wavelength. The relation between wavelength and speed is given by :

\lambda=\dfrac{h}{mv}\\\\=\dfrac{6.63\times 10^{-34}}{0.0459\times 63}\\\\=2.29\times 10^{-34}\ m

So, the corresponding wavelength is 2.29\times 10^{-34}\ m.

8 0
2 years ago
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