Send wave from your location to the object and wait until echo is back.
Measure the time taken.
If you know the speed of wave (say sound wave), than just multiply by half time taken wave to return
When the mixture (the sugar and water) is frozen, it separates. The water molecules get closer together, separating and pushing the sugar crystals to the top.<span />
Because the electrons collide with the particles inside the conductor so are therefore slowed down seen as current is the rate of flow of electrons
It’s C because just trust
The correct answer should be bounced off since the light ray hit the surface and reflected towards a new location. It therefore bounced off.
