Andrew plays trumpet in the concert band. he holds the trumpet still at his side until it is time for him to play. when it is time, he brings the trumpet up to his mouth and starts to play. which statement correctly connects the motion of the trumpet with newton's first law of motion?

According to Newton's first law of motion Trumpet will remain at rest state unless Andrew applies a net force different of zero. 

Explanation:

Andrew plays trumpet in the concert band. He holds the instrument still at his side until it is time for him to play.Later, he mover the trumpet up to his mouth and starts to play.

Firstly, the trumpet is at rest stays with zero movements, zero velocity, and zero acceleration. The trumpet remains in this state due to Newton's first law of motion: An object at rest remains at rest and an object in motion stays in motion with the same speed and the same direction unless acted upon by an unbalanced force. As there is no net force acting on the trumpet, it remains in zero velocity.

Secondly, Andrew moves the trumpet. It means Andrew applied force to move the trumpet. Due to it, the body changed from the rest state to the movement state.

Finally, we can conclude that according to Newton's first law of motion Trumpet will remain at rest state unless Andrew applies a net force different of zero.  

i just learnt this recently but i need to look through my notes again

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.