8. A silver rod is 100cm long at 0°C what is the increase in length of the rod when heated to 100°C? (d = 1.9x10-51/09)
A/0.19m B) 0.0019m
C) 1.9m
D) 0.019m

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.

C. the electric current passes from the slip rings, through the brushes, and to the collection device.