A lodestone is a naturally magnetized piece of the mineral magnetite. They are naturally occurring magnets, which can attract iron. The property of magnetism was first discovered in antiquity through lodestones.
We know average speed =total distance/time taken
So avg speed=(85+63)/(5+5)=14.8km/hr
Answer: you cant see sound waves but youcan defiently hear them . when the travle through difrent levels they depend on how loud the sound wave is if you hear a loud sound its called a loud sound wave
Explanation:
W = 25 J
Explanation:
Work done on an object is defined as
The component that’s dissolved is called the solvent
