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3 years ago

6

Glass is called fourth state of matter.give reasons

1 answer:

Lunna [17]3 years ago

6 0

Answer:

Glass is a solid. It is a kind of solid known as “amorphous crystalline” which means it is substantially similar to familiar crystals such as quartz, diamond, and table salt. The only difference is that the molecules of glass have crystallized in a random arrangement instead of a repeating pattern like a basic crystal.

Explanation:

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When light is reflected by a mirror, the angle of incidence is always A. equal to the angle of reflection. B. less than the angl

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3 years ago

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In February 1955, a paratrooper fell 362 m from an airplane without being able to open his chute but happened to land in snow, s

serious [3.7K]

Answer:

s = 0.9689 m

Explanation:

given,

Height of fall of paratroopers = 362 m

speed of impact = 52 m/s

mass of paratrooper = 86 Kg

From from snow on him = 1.2 ✕ 10⁵ N

now using formula

F = m a

a = F/m

$a = \dfrac{1.2 \times 10^5}{86}$

$a =1395.35\ m/s^2$

Using equation of motion

v² = u² + 2 a s

$s =\dfrac{v^2}{2a}$

$s =\dfrac{52^2}{2\times 1395.35}$

s = 0.9689 m

The minimum depth of snow that would have stooped him is s = 0.9689 m

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3 years ago

sage has a walking speed of 300 feet per minute on the way to gate 14c at the airport sage has the option of using a moving side

nalin [4]

Answer:

2 min 40 s.

Explanation:

Distance = 800 ft

Speed (walking speed) = 300 ft/min

Speed = distance/time

Time, t = 800/300

= 8/3

= 2 min 40 s.

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A 60kg bush walker is suffering from hypothermia, having an average body temperature of 33.5 degrees Celsius. When rescued, she

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The acceleration due to gravity on Earth is 9.80 m/s2. If the mass of a honeybee is 0.000100 kilograms, what is the weight of th

Yuliya22 [10]

Answer:

0.00098 N

Explanation:

The weight of an object is given by:

$W=mg$

where

m is the mass of the object

g is the gravitational acceleration on the planet

In this problem, we have:

$m=0.0001 kg$ is the mass of the honeybee

$g=9.8 m/s^2$ is the acceleration due to gravity

Substituting into the equation, we find:

$W=mg=(0.0001 kg)(9.8 m/s^2)=0.00098 N$

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3 years ago

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