Answer:
he kinetic energy increases on the descent, being maximum at the lowest point of the trajectory.
Explanation:
In these semicircular sections the skaters slide from one side to the other, in the downward path their kinetic energy increases and their potential energy decreases; When it leaves the ramp and is in the air, the kinetic energy decreases rapidly, up to the point of maximum height where the kinetic energy is zero.
Consequently, the kinetic energy increases on the descent, being maximum at the lowest point of the trajectory.
Answer:
Friction between two objects causes a transfer of electrons from one object to the other.
Explanation:
Two things are said to be in contact if the smallest distance between a point in one of them and a point in the other one is zero.
Answer:
Q2: a) make sure the sugar sample used is constant
b) conduct the experiment twice and use the average
c) the type of container used
Q3: a) out of the three, icing sugar dissolves the fastest
b) substances dissolves faster in warmer waters
Q4: molecules in warmer waters moves at a greater speed than in colder waters, having more kinetic energy and colliding with the solute more frequently. More energy is then transferred to the solute molecules to break their bonds, making them dissolve faster.
