Answer:
D. Friction slow down or stop objects in motion.
<span>Scientific investigation aims to advance knowledge of the world around us so as to encourage technological development with the intended purpose of finding cures for disease, protecting natural resources, and enhancing human's productivity in all areas.</span>
Answer: Preoperational stage (second stage).
Explanation: In the second stage of Child's development i.e., from the age of 2 years to 7 years approximately, which is called as Preoperational stage, a child develops a strong sense of Egocentrism. It is a situation where a child is unable to see thing from other peoples' eye and feels that everyone's reaction to something should be same as the child's. At this stage, a child is busy and completely trapped in his own dreamy world and is not ready to understand things properly.
Hence, the stage is Preoperational stage.
Astronomers give stars names so that they're able to identify and keep track of them more easily.
Answer:
Explanation:
Given
A plastic rod is rubbed with a woolen cloth and the Glass rod is rubbed with silk rod.
After the rubbing Plastic rod will acquire the negative rod and the glass rod will acquire a positive charge.
(a)If an object repels the plastic rod then it must be of the same nature i.e. of negative charge.
As the object is negative in nature it will attract the glass rod.
(b)Another object is attracting the plastic rod i.e. the object must be positively charged as a plastic rod. This happens because the opposite charge attracts and same charge repel each other.
It will repel the glass rod
