It’s because new discoveries are made all the time sometimes what was considered right may be found out to be wrong
Answer:
ON
Explanation:
Frictional force is a force that opposes the motion of body. It is because of friction that motion can be controlled and even walking is made possible.
Now, on a frictionless surface, there is no opposition to motion. Therefore, to keep the body moving there is no force required.
- If surface lacks friction, motion will continue perpetually without any hinderance.
Answer:
I guess B They have a charge
The population decreases when the birth rate is less than the death rate.
Solid , solid, partially melted, liquid so the answer is D
