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vaieri [72.5K]
3 years ago
11

Why is a depletion of the ozone layer harmful?

Physics
2 answers:
Ludmilka [50]3 years ago
7 0

Answer:

because otherwise the harmful Ultraviolet rays of the sun penetrates the Earth's surface and causes numerous diseases in humans like skin cancer, cataract etc.

creativ13 [48]3 years ago
7 0
Because with out them ultra violet rays would affect earths surface
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Why hail is sometimes dangerous
Bogdan [553]
Because it’s hard snow that can kill you
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3 years ago
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A hanging wire made of an alloy of titanium with diameter 0.05 cm is initially 2.7 m long. When a 15 kg mass is hung from it, th
Svet_ta [14]

Answer:

Explanation:

Young's modulus of elasticity Y = stress / strain

stress = force / cross sectional area

= weight of 15 kg / π r²

= 15 x 9.8 / 3.14 x ( .025 x 10⁻² )²

stress = 74.9 x 10⁷ N / m²

strain = Δ L / L , Δ L is change in length and L is original length

Putting the values

strain = .0168 / 2.7 =.006222

Young's modulus of elasticity Y  = 74.9 x 10⁷ / .006222

= 120.88 x 10⁹ N / m² .

8 0
3 years ago
Plasma is the most abundant state of matter in the universe
Darina [25.2K]
Plasmas are the most common state of matter in the universe. <span>A plasma is a gas that has been energized to the point that some of the electrons break free from, but travel with, their nucleus.</span>
6 0
4 years ago
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Why doesn't the skater ever regain his potential energy? ​
lina2011 [118]

Answer:

potential energy is stored energy...basically energy gathered from staying still so because the skater is in motion he has lost the potential energy and turned it into kinetic energy

Explanation:

7 0
3 years ago
The specific gravity of an material is defined as the ratio of the density of the material to the density of water. The specific
Alexandra [31]

The percentage of the iceberg that is visible above the water's surface will be 11.5%.

<h3>What is density?</h3>

Density is defined as the mass per unit volume. It is an important parameter in order to understand the fluid and its properties. Its unit is kg/m³.

The mass and density relation is given as

mass = density × volume

Density of ice = 917 kg/m³

Density of the seawater=1025 kg/m³

The ratio by which the iceberg submerge is found as;

\rm  \frac{V_S}{V} =\frac{\rho}{\rho_0} \\\\ \frac{V_S}{V} =\frac{917}{1025} \\\\ \frac{V_S}{V} =.895

Hence,89.5 % of the ice is submerged.

The percentage of the iceberg that is visible above the water's surface is;

⇒1-.89.5 %

⇒11.55 %

Hence, the percentage of the iceberg that is visible above the water's surface will be 11.5%.

To learn more about the density refers to the link;

brainly.com/question/952755

5 0
3 years ago
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