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:
Explanation: according to Coulomb's inverse-square law is proportional to the square of distance between them and is given by

where r is the distance between the charges & k is the Coulomb's constant
k=1/(4*ε_0*π)
k=9*10^9
the distance between the charges in this question is d_1
hence the magnitude of the force exerted by q_0 on q_1 is given by

due to location of particle 1 above the particle 0 the direction of force is parallel to y axis and in vector form

Kinetic Energy
How to calculate
Kinetic energy is given by K.E.

Where
- m is denoted to mass
- v is denoted to velocity