B. The apple from the bottom will hit the ground earlier. This is because an increase in height causes an increase in the time that the object will fall, and therefore will affect the final velocity of the falling object. Moreover, the reduction in velocity due to friction from the air should also be considered.
Answer
Work done will be 
and it will be positive
Explanation:
We have given charge 
We have to find work done in moving the charge from 15 volt to 8 volt
Let 
So potential difference 
We know that work done 
, here Q is charge and V is potential difference
So work done 
It will be positive work done because work is done in moving charge from higher potential to lower potential
Explanation:
1.Pick up litter and throw it away in a garbage can.
2.Blow or sweep fertilizer back onto the grass if it gets onto paved areas. ...
3.Mulch or compost grass or yard waste. ...
4.Wash your car or outdoor equipment where it can flow to a gravel or grassed area instead of a street.
5.Don't pour your motor oil down the storm drain.
If the pebble sinks it has a greater density an the twig has a lighter density
just like water and oil. water sits on top of oil because of their density
