The best explanation is the <em>difference</em> between the inside <em>temperature</em> and the outside temperature.
If the player doesn't change his emboucher (muscles and position of his lips), then the pitch produced by the instrument depends only on the physical dimensions of its plumbing, and the speed of sound in the tube.
BOTH of those things change slightly when the temperature changes.
Answer:
ANS : .Energy spent on spraying =
Explanation:
<em>Given:</em>
- <em>Radius of mercury = 1cm initially ;</em>
- <em>split into
drops ;</em>
Thus, volume is conserved.
i.e ,
- Energy of a droplet =
Δ
Where ,
- <em>T is the surface tension </em>
- <em>ΔA is the change in area</em>
Initial energy 
Final energy 
∴ .Energy spent on spraying = 
ANS : .Energy spent on spraying =
Weight is a force caused by gravity. The weight of an object is the gravitational force between the object and Earth.
The force that acts on all objects, all the time on Earth is gravitational force.
The force that surface exert on an object perpendicularly is normal reaction.
<h3>What force acts on all objects, all the time on Earth?</h3>
- Force due to gravity is gravitational pull on objects due to its position on earth's surface.
The force due to gravity on object's is calculated by applying Newton's second law of motion as follows;
F = mg
where;
- m is the mass of the object
- g is acceleration due to gravity
The force that surface exert on an object perpendicularly is normal reaction.
Thus, the force that acts on all objects, all the time on Earth is gravitational force.
Learn more about force of gravity here: brainly.com/question/2537310
