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Allisa [31]
3 years ago
5

Why do star clusters make superbubbles? Why do star clusters make superbubbles?

Physics
1 answer:
Debora [2.8K]3 years ago
8 0

Answer:

Superbubbles form when the hottest, most massive stars in a cluster explode as supernova within a few hundred thousand years of each other. Their bubbles merge into a giant bubble, called a "superbubble."

Explanation:

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The diagram shows a position-time graph What is the displacement of the object
algol13

The object is moving, so at different times, it has different displacement.  I'm guessing that you probably want to know the displacement at the end of the time on the graph ... 5 seconds.

Displacement is the distance and the direction FROM (the position at the  beginning) TO (the position at the end).

At the beginning ... time=0 ... the position is 1 meter.

At the end ... time=5 ... the position is zero.

The distance FROM the beginning TO the end is (zero - 1m) .  That's  <em>-1m </em>.


5 0
3 years ago
Describe the energy of a playground swing at its highest point
Korvikt [17]
At the hightest point it would be potential energy, because the energy is stored and then when it is rocking back and forth it has kinetic energy
8 0
4 years ago
an athlete whirls a 7.00 kg hammer tied to the end of a 1.3 m chain in a horizontal circle the hammer moves at the rate of 1.0 r
ElenaW [278]

Answer:

The answer to your question is a = 1.3 m/s²

Explanation:

Centripetal acceleration is the motion of a body that transverse a circular path.

Data

mass = 7 kg

radius = r = 1.3 m

angular rate = w = 1.0 rev/s

centripetal acceleration = a = ?

Formula

a = rw²

Substitution

a = (1.3)(1)²

Simplification and result

a = 1.3 m/s²

4 0
3 years ago
Which factor (s) have the most affect a person’s vital capacity? Rank in order from MOST effect (1) to least effect (5)
jenyasd209 [6]

The factors that affect vital capacity are :

  1. Age
  2. Sex
  3. Height
  4. Body mass
  5. Ethnicity

Explanation:

Vital capacity is the maximum amount of air that a person can exhale once he has filled his lungs with maximum air. So, it is like maximum exhalation after maximum inhalation by a person.

Vital capacity is also equal to Forced Vital Capacity.

Lung usually have their maximum capacity in early adult days and this capacity reduces as the person grows older. So age is the prime factor in this.

A female with same age and height as that of male will have 10-12% less vital capacity than him. So sex is another reason which determines vital capacity.

Person with more height has more vital capacity. This is because lungs capacity is closely related to the third power of person's height.

Person suffering from obesity will have compressed diaphragm, lung and chest cavity , so their vital capacity will be less. So we can say body mass affects vital capacity.

Last factor, ethnicity, is yet to be understood clearly as there is not much evidence of this.

3 0
3 years ago
A train traveled 85 mph for 7 hours how far did it travel?
Sergio [31]

Answer:

12.1429 miles per hour

Explanation:

4 0
3 years ago
Read 2 more answers
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