The sound waves pass through the door and will then go further from the space near the door making the sound hear outside the door also.
<u>Explanation:</u>
Waves can twist around corners in view of an impact called diffraction. The sum that a wave will twist around a corner as a result of diffraction is about equivalent to its frequency. So it is a lot simpler to see the bowing of the sound waves, since it is around a million times greater than the bowing of the light waves.
As the waves pass through the door, they bend and travel into the space near the door. Because they spread out into the space beyond the door, a person near the doorway can hear sounds from inside the room.
Coal plants use a boiler to produce steam.
Answer:
Explanation:
The formula for momentum is:
(<em>p</em> is momentum, <em>m</em> is mass, and <em>v </em>is velocity)
Let's rearrange the formula for velocity, or v.
Velocity can be found by dividing the momentum by the mass.
The momentum is 180 kilograms meter per second. The mass of the boy is 40 kilograms.
Substitute the values into the formula.
Divide. Note that the kilograms or "kg" will cancel each other out.
The velocity of the boy is <u>4.5 meters per second.</u>
Explanation:
When the air resistance on an object which is also called the drag force, equals to the object's weight (N) (Don't get confused here, Weight here refers to the force exerted by an object. Mass is measure in kgs. So therefore the Weight will be measured in Newtons or N), it reaches terminal velocity where the object will have the acceleration of 0 and will fall at constant velocity.
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