Its an electrochemical cell that derives electrical energy from spontaneous redox reactions taking place within the cell.
D) The speed of a wave slows as it travels at different speed in different media.
<span>The meaning of the Big Bang has been very often misunderstood. It is thought that something exploded somewhere and then the exploded part expanded to where we are currently. I hope this did help If not I`m so sorry.</span>
If it takes

seconds to reach the car, then the distance

is

.
The bear's distance from the tourist's starting point is

For maximum

, we set the equations equal to each other:



so the distance is