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denis-greek [22]
3 years ago
6

Which event triggers the start of black hole formation?

Biology
1 answer:
docker41 [41]3 years ago
8 0

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

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The diagram below shows a newspaper headline.
Bingel [31]
Answer: a hypothesis.

A hypothesis means a theory or a guessed explanation made, based on limited evidence as a starting point for further investigation.
4 0
3 years ago
A possible reaction for the degradation of the pesticide DDT to a less harmful compound was simulated in the laboratory. The rea
Bas_tet [7]

Answer:

This exercise is incomplete, missing the value of k (decay constant), which is equal to 4x10⁻⁸s⁻¹ at 25°C

The answer is 0.549 years

Explanation:

Given:

first order of reaction

k = 4x10⁻⁸s⁻¹

For a first order of reaction, the half-life time for the degradation of DDT is equal to:

t=\frac{0.693}{k} =\frac{0.693}{4x10^{-8} } =17325000s=0.549years

8 0
4 years ago
Kudzu, a vine native to Asia, was introduced into the USA in 1876. Farmers in the South were encouraged to plant kudzu to reduce
Tamiku [17]

Answer:

hi what did you get for this one?

Explanation:

4 0
3 years ago
A light bulb converts electrical energy into both heat and light energy true or false
maria [59]
The answer is TRUE..
7 0
3 years ago
In what ways does the "viscosity" of H₂O — as a property of H₂O — beneficial to life on Earth? {No answer choices given. WILL CO
butalik [34]

The viscosity of water is the thickness of water (it might also be considered the stickiness when talking about other fluids). Water has many properties, and the viscosity of water influences in many of them. We can take the surface tension of a liquid as an example. The more viscous a substance is, higher will the surface tension be and vice versa since there will be a higher and lower attraction between molecules respectively.


→ The surface tension of water is something really important since it contributes in many ways to the environment and if you think about it, if the water was a little less viscous, there wouldn't be water since the viscosity of water makes it resistant to evaporation to a certain degree.


Hope it helped,


BioTeacher101

5 0
3 years ago
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