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SVETLANKA909090 [29]
3 years ago
6

A starlike object seen on deep sky photographs coincides with an intense radio source and has a spectrum in which the characteri

stic lyman pattern of hydrogen spectral lines has been shifted from the ultraviolet to the visible spectral range. what is this object?
Physics
1 answer:
liberstina [14]3 years ago
6 0
A quasar - <span>Quasars are very distant objects. They  are really bright masses of energy and light. The word quasar is actually short for quasi-stellar radio source or quasi-stellar object. This high amount of energy in such a small area can only be formed by matter falling towards a Black Hole. That's why quasars are believed to be huge black holes  in the center of young galaxies.
</span><span />
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A 3.50-meter length of wire with a cross-sectional area of 3.14 × 10-6 meter2 is at 20° Celsius. If the wire has a resistance of
maks197457 [2]

Answer:

5.6\times 10^{-8}\ Ohm.m

Explanation:

Resistivity is given by \rho=\frac {AR}{L} where A is cross-sectional area, R is resistance, L is the length and \rho is the reistivity. Substituting 0.0625 for R, 3.14 × 10-6 for A and 3.5 m for L then the resistivity is equivalent to

\rho=\frac {3.14\times 10^{-6}\times 0.0625}{3.5}=5.60714285714285714285714285714285714285\times 10^{-8}\approx 5.6\times 10^{-8}\ Ohm.m

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3 years ago
Mariah trained for months leading up to the marathon, and she won. After seeing this, her friends and family would describe her
alexandr402 [8]

Answer:

Mariah trained for months leading up to the marathon and won. Her sole motivation was that after seeing her winning the marathon, her friends and family would call her as motivated and athletic. It means that Mariah wanted to fulfill her esteem needs.

Explanation:

<u>According to Abraham Maslow:</u>

Safety needs includes the personal security, the safety of health, resources and property. etc.

Physiological needs falls at the lowest level of basic needs. It includes food, water, rest. etc which are necessary for an individual's survival.

Esteem includes the need of respect and self-confidence.

Cognitive needs includes the desire of knowledge, to know things, to know what is happening and why is it happening around you.

<u>In Mariah's case</u><u>, she needed respect and motivation and thus she was trying to fulfill her esteem needs by winning the marathon.</u>

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8 0
3 years ago
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Pleasse help
GaryK [48]

Hi,

The correct answer is letter B.

The last group contains noble gases, while both along the top and along the bottom the elements on the right are non-metals.

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4. Uncle Harry weighs 180 pounds. What is his mass in kilograms?
MatroZZZ [7]
180 pounds (lb) converts to 81.647 kilograms (kg).
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2 years ago
Galileo _____.
AnnZ [28]

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friction help to slow motion in other word it oppose motion, but in a frictionless environment object would move with difficult stopping point.

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