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eimsori [14]
3 years ago
6

Structures such as columnar joints are found near gullfoss in the reykjanes peninsula. How were these structures created?

Biology
1 answer:
iVinArrow [24]3 years ago
7 0

The columnar joints can be defined as the structures formed in basalt. The are composed of columns that are separated by the cracks or fractures that occurs in the rocks when it contracts when it is cooling down.  Basalt are volcanic igneous rocks formed from the erupted lava. The lava cools down after its eruption. When it cools, it starts contracting, which leads to the fractures and cracks. The contraction causes the formation of the columns mostly in the hexagonal shapes. This leads to the formation of the geometrical columnar joints.

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Sound quality can be divided
iris [78.8K]
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To avoid this, you should ensure that both devices connected to the split signal are similar - such as 2 pairs of headphones, 2 recorder inputs, and so on. When you place 2 devices with wildly differing load impedances on a splitter is when you’ll encounter problems - such as headphones on one split and a guitar amp input on the other.

To get around this, you can use either a distribution amplifier (D.A.) or a transformer balanced/isolated splitter - which will work over a larger range of load impedances, typically. Depends on the quality of the splitter and the exact signal path. If you’re using the splitter to hook two things into one input, and you’re using quality connectors, you probably won’t lose much quality. There can be an increase in impedance of the cable due to the imperfect continuity of the physical connection, however with unbalanced line-level signals, impedance at both ends of the chain tends to be orders of magnitude higher than the connection will create, so one split will be barely noticeable. So too, the noise increase from the additional length of cable.

Now, one source into two inputs, that will by basic math and physics result in a 3dB drop in signal strength, which will reduce SNR by about that much. By splitting the signal path between two inputs of equal impedance, half of the wattage is being consumed by one input and half by the other (the equation changes if the inputs have significantly different impedances). So each input gets half the wattage produced by the source to drive the signal on the input cable, and in decibel terms a halving of power is a 3dB reduction. Significant, until you just turn the gain back up. The “noise floor” will be raised by however much noise is inherent in the signal path between the split and the output of the gain stage; for pro audio this is usually infinitesimal, but consumer audio can have some really noisy electronics, both for lower cost and because you’re not expected to be “re-amping” signals several times between the source and output.

8 0
3 years ago
What enzyme catalyzes the reaction in the Calvin cycle?
Mashcka [7]

Answer:

ribulose bisphosphate carboxylase (RuBisCO)

Explanation:

The Calvin cycle is a process utilized to ensure carbon dioxide fixation. ... The carbon dioxide is combined with ribulose 1,5-bisphosphate to form two 3-phosphoglycerate molecules (3-PG). The enzyme that catalyzes this specific reaction is ribulose bisphosphate carboxylase (RuBisCO).

4 0
3 years ago
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The genetic information for making a protein must move from the nucleus to the cytoplasm. Which of these moves this information
egoroff_w [7]

Answer:

B

Explanation:

The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm. Translation, the second step in getting from a gene to a protein, takes place in the cytoplasm.

8 0
3 years ago
23.<br> If you have a density of 2.5 g/mL and a mass of 5 g, what is the volume?
lilavasa [31]
  • Answer:

<em>2 ml</em>

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<em>d = m/V => V = m/d</em>

<em>V = 5g/2.5g/ml</em>

<em>= 2 ml</em>

<em>= 2 cm³</em>

6 0
4 years ago
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 <span>A law is a theory that has explained a number of observed phenomena, and it has predicted a number of other phenomena which may as yet be unobserved.  

In that sense, a law is a theory that has not yet been proven wrong or given rise to any contradictions. 

A theory is just a theory until it has been proven true by experiments and observation</span>
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