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Vlad1618 [11]
3 years ago
12

Which statements accurately describe binary star systems? Check all that apply. have more than two stars have stars that are alw

ays visible include large groups of stars have stars that might appear to wobble often have one star that is brighter than the other
Chemistry
2 answers:
Westkost [7]3 years ago
6 0

Answer:

have stars that might appear to wobble

often have one star that is brighter than the other

Explanation:

A binary star system is a star system made up of mostly two stars that moves round their common fixed center.

The two orbiting stars are gravitationally bonded to one another and they move round each other.

Most binary stars might appear wobble. One of the stars often appears brighter than the other.

iogann1982 [59]3 years ago
3 0

Answer:

the answer is d and e

Explanation:

I took the quiz.

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covalent bonds............

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A pH scale has how many sections on it?
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0-14

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Electron transfer is the term for this process. The resulting anion and cation are attracted by Coulombic forces and an ionic co
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<h2>The compound formed is NaCl and CaCl_{2}</h2>

Explanation:

     PART 1:

  • Atomic number of sodium is 11.
  • Sodium(Na, Z = 11, Group 1A) will lose 1 electron to become Na^{1+} which is isoelectronic to Neon (Ne ,Z = 10).
  • The symbol for the sodium ion is Na^{+}.
  • Chlorine atom (Cl, Z = 17, Group 7A or 17) gains 1 elecron to be  isoelectronic to neon.
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  • PART 2:
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  • The symbol for the ion is Ca^{2+}.
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8 0
3 years ago
. The kidneys are _______________ to the liver.
m_a_m_a [10]
I’d say posterior because the right kidney is slightly above where the liver is
7 0
3 years ago
3. At the end of a warm summer day, imagine you are jumping from the 80°F air into an
djyliett [7]

Answer:

  • <u>1. Since the temperature of your body is higher than the temperature of the air and of the water, heat will flow from your body to the air and pool.</u>

<u></u>

  • <u>2. The pool feels cooler than air because the water can absorb heat energy faster than the air, due to liquids are better conductors than gases.</u>

<u></u>

Explanation:

Heat always flows from warmer substances to colder ones.

The normal body temperature is 98ºF. Therefore, the heat will flow from your body to the air and pool, which are at a lower temperature of 80ºF. In both cases, you will lose thermal energy and the external parts of your body will cool down.

The difference between both cases is in the heat conduction capacity of both air and water.

Liquids (and solids) are better <em>thermal conductors </em>than gases because the conduction of heat occurs as result of the direct contact between the particles of matter: the atoms or molecules in hot matter vibrate faster than their neighbors and transmit them kinetic energy by direct contact.

Therefore, the liquid water in the swimming pool, at the same temperature than the air, will be able to absorb more heat in the same time from the body.

In conclusion, the body will cool down faster in water than in air which is why the pool feels cooler than air.

8 0
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