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3 years ago

Which sentence accurately describes star clusters?

Biology

2 answers:

oksian1 [2.3K]3 years ago

7 0

Answer:

stars form grouping

Explanation:

i got it right on edgenuity

Elza [17]3 years ago

4 0

Answer:

Stars form large groupings

Explanation:

A large group of stars that have a common origin and are gravitationally bound for some length of time is called star clusters. Star clusters provide a way to study the ages of stars and stellar evolution. There are two categories of star clusters i.e. galactic clusters, and globular clusters.

Out of the given options, we can say that the correct option is (b) "Stars form large groupings".

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Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of

Elodia [21]

Answer:

$\boxed {\boxed {\sf 121.905 \ J }}$

Explanation:

We are asked to find the energy given mass, specific heat, and change in temperature. Therefore, we must use this formula;

$q= mc \Delta T$

The mass is 15 grams and the specific heat is 0.129 J/(g×°C). Let's calculate the change in temperature.

ΔT= final temperature - initial temperature
ΔT= 85 °C- 22°C = 63°C

Now we know all the values:

$m= 15 \ g \ \\c= 0.129 \ J / (g* \textdegree C) \\\Delta T= 63 \ \textdegree C$

Substitue the values into the formula.

$q= (15 \ g)( 0.129 \ J / (g* \textdegree C)) ( 63 \ \textdegree C)$

Multiply the first numbers together. The grams will cancel.

$q= (1.935 \ J/ \textdegree C) ( 63 \ \textdegree C)$

Multiply again, this time the degrees Celsius cancels.

$q= 121.905 \ J$

<u>121.905 Joules</u> are required.

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kkurt [141]

Answer:Argon is the third noble gas, in period 8, and it makes up about 1% of the Earth's atmosphere.

Explanation: because ik trust me lmk if im right and give my brainliest answer and likes plz

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kondor19780726 [428]

Nervous system is divided into parasympathetic and sympathetic

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Fantom [35]

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Afina-wow [57]

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