Answer:
Matter is anything that has mass and occupies space. The flame itself is a mixture of gases (vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, and many other things) and so is matter. <em><u>The light produced by the flame is energy, not matter.</u></em>
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Answer:
Angular velocity, 
Explanation:
The mass of the skater, M = 74.0 kg
Mass of each arm,
( since it is 13% of the whole body and each arm is considered)

Mass of the trunk, 

Total moment of Inertia = (Moment of inertia of the arms) + (Moment of inertia of the trunks)


The final moment of inertia of the person:

According to the principle of conservation of angular momentum:

Answer:
The velocity of the ball when its hit the ground will be 54.22 m/sec
Explanation:
We have given height from which ball is dropped h = 150 m
Acceleration due to gravity 
As the ball is dropped so initial velocity will be zero so u = 0 m/sec
According to third equation of motion we know that 


So the velocity of the ball when its hit the ground will be 54.22 m/sec
Answer:
The acceleration of Abbie is half of the Zak's.
Explanation:
The centripetal acceleration of an object on a circular path is given by :

Two children are riding on a merry-go-round that is rotating with a constant angular speed. Let
is distance of Abbie from the merry-go-round and
is distance of Zak's from the merry-go-round. Acceleration of Abbie is :
...... (1)

Acceleration of Zak's is :
.......(2)

Dividing equation (1) and (2) we get :

So, the acceleration of Abbie is half of the Zak's.
Strong nuclear force is most like electrical force because they are both related to distance statement best describes the similarities between fundamental forces.
<u>Option: D</u>
<u>Explanation:</u>
There are four forms of fundamental forces in nature. They are called gravitational force, electromagnetic force, strong nuclear force, and weak nuclear force. Strong nuclear force is a spin-dependent, charging-independent force that arises into being due to the mutual association of gluons binding protons and neutrons.
It is also hundred times more powerful than electromagnetic force. Poor nuclear capability comes into being during radio-active decay. This force is due to the interaction of 'w' and 'z' bosons (particles such as protons and neutrons with integral or zero spin) that are heavier in nature. The function of this force is to turn protons into neutrons and vice versa.