<span>The relationship between two quantities that increase or decrease together is called directly proportional.

It is a directly proportional relationship because being directly proportional means that if one increases so does the other, and if one goes down so does the other.</span>

3 0

3 years ago

Write a short story that describes haw matter changes from one physical state to another

marin [14]

I'll assume this is can or is fictional prose.

Two Icecubes sat in a freezer in the kitchen. One was so bold to claim he could survive walking across the stove. As he made his way to the stove, he noticed he was leaving a wet trail, "no matter" he thought and continued his path. He touched the stove and in an instant was no longer an ice cube. He was a puddle, but not for long. He then started to float and became steam.

Thus he went from solid to liquid to gas.

3 0

3 years ago

Two particles of mass 1 kg each are attached to a massless rod a distance of 1 m and 2m respectively from the axis of rotation.

Firlakuza [10]

Answer:

Option (d)

The angular momentum of the system is 5 Kg-m²/s

Explanation:

Angular momentum: Angular momentum is the product of angular velocity and of moment of inertia.

Angular momentum is dented by L

And the unit of angular momentum is Kg-m²/s

L= I×ω

I is momentum of inertia

ω is angular velocity.

The unit of angular velocity is red/s.

Momentum of inertia : Momentum of inertia is the sum square the perpendicular distance from the rotational axis to of product mass of each particle of the body.

$I=\sum Mr^2$

The S.I unit of momentum of inertia is kg-m²

The angular momentum of a system is:

L= ∑I ω

=∑ Mr²ω [ Since $I=\sum Mr^2$ ]

Given , M= 1 kg, r₁=1 m , r₂= 2 m and ω = 1 rad/s.

The angular momentum of the system is

L= Mr₁²ω+Mr₂²ω

= Mω(r₁²+r₂²)

= {1×1 (1²+2²)}

=5 Kg-m²/s

5 0

3 years ago