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3 years ago

What was significant about the discovery of gallium

Physics

2 answers:

Kryger [21]3 years ago

8 0

It confirmed medeleeve's hypothesis (prediction) and showed the use of his table

Alenkasestr [34]3 years ago

8 0

Answer:

The significance of the discovery of Gallium is discussed below.

Dmitri Mendeleev predicts all properties and elements in the periodic table.

In 1875 Paul Emile Lecoq de boibaudran discovered gallium in the pyrenees mountains.

Before this Gallium was not physically discovered since Mendeleev's death although Mendeleev predicts its presence even he never saw it before.

Gallium is also known by "Ga", it is a Metal and Its state of matter is liquid at room temperature.

Gallium is a solid metal at room temperature that melts in your hands.

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A bird takes off from the tree and after 5 s is flying at a speed of 10 m/s. Calculate

Volgvan

Answer:

10miles/second

Explanation:

Change in velocity of the bird is expressed as the difference between the final velocity and initial velocity of the body.

Change in velocity = Final velocity - initial velocity

Since the bird takes off from the tree, the initial velocity of the bird = 0miles/sec

Final velocity = 10miles/secs

Change in velocity = 10-0

Change in velocity = 10miles/second

6 0

2 years ago

As shown above an adhesive has been applied to contacting faces of two blocks so that the blocks interact with an adhesive force

rusak2 [61]

The magnitude of the adhesive force allows the top block to remain

attached to the bottom when the blocks and the wire are balanced.

The option that must be true is; $\mathbf{W_{bottom} = F_{adhesion}}$

Reason:

The tension exerted by the wire attached to the top block = T

Magnitude of the adhesive = $F_{adhesion}$

Weight of the top block = $W_{top}$

Weight of the bottom block = $W_{bottom}$

Given that with the exertion of the tension, the two blocks remain at rest, we have;

T = $W_{top}$ + $W_{bottom}$

The adhesive causes the bottom block to remain attached to the top block, we have;

Therefore, the magnitude of the adhesive force adds the bottom weight, to the top, weight, which gives;

The magnitude of the adhesive force = The weight of the bottom block

Therefore;

$W_{bottom}$ = $F_{adhesion}$

Learn more here:

brainly.com/question/18907970

8 0

3 years ago

How many hydrogen atoms are in a water molecule?

earnstyle [38]

The subscript after the element indicates the number of atoms of that element in the molecule. So, in H20, the subscript after the H, which stands for hydrogen, is 2. This means that there are 2 hydrogen atoms in a water molecule.

Hope this helps! :)

4 0

3 years ago

Dose aloe Vera grow in the mesa?

Zina [86]

there are diffrent species of aloe vera so there is

3 0

3 years ago

Which will most likely be a consequence as fossil fuel reserves are depleted?

bazaltina [42]

It honestly depends. Fossil fuels are non-renewable so if reserves are depleting there is a threat of them running out and/or more pollution.

8 0

2 years ago