Positive ions have lost one or more electrons so have a positive charge rather than a neutral one.
Answer:
B. Friction with air also affects the fall of the object.
Explanation:
The limitation of this experimental design is that friction with air also affects the fall of the object.
- Therefore, it is difficult to measure effect of gravity on falling objects.
- Air resistance cause friction in the movement of an object falling.
- Frictional force resists the motion of an object subject to free fall.
Therefore, the experiment will be biased due to the influence of the frictional force.
Examples of medium are solid ,liquid ,and gas basically matter. :D
A wave that transfers energy through vibrating In a medium