Does the atmosphere contain 21% nitrogen in 78% oxygen

Physics

1 answer:

Alex777 [14]3 years ago

7 0

Answer:

An atmosphere is the layers of gases surrounding a planet or other celestial body. Earth's atmosphere is composed of about 78% nitrogen, 21% oxygen, and one percent other gases

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Asbestos would most likely be found where in a house?

SCORPION-xisa [38]

Asbestos would most likely be found around pipes in a house.

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Its composition is similar to thin fibers like crystals of of silicate mineral.

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These tiny particles are considered harmful for health as they are carcinogenic in nature and causes mesothelioma.

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After pushing away from each other, two objects have equal but opposite momentum. Which of the following is true for the total m

weqwewe [10]

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3 years ago

Definition of force equation

Georgia [21]

Answer:

force is that push or pull of the body that change or tends to change the state of rest or uniform motion in a straight line.

Explanation:

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3 years ago

A boy throws a ball of mass 0.22 kg straight upward with an initial speed of 29 m/s. When the ball returns to the boy, its speed

maksim [4K]

Answer:

The work is -67.76 J

Explanation:

The law of conservation of energy is considered one of one of the fundamental laws of physics and states that the total energy of an isolated system remains constant. except when it is transformed into other types of energy.

This is summed up in the principle that energy can neither be created nor destroyed in the universe, only transformed into other forms of energy.

In this case you must calculate the loss of kinetic energy. This loss is actually the work done against the resistive force in the air. Friction is the only force other than gravity that acts on the ball.

So, the loss of kinetic energy is $\frac{1}{2} *m*(vf^{2} -vi^{2} )$