Answer:
In today's world pollution is very high so alternative energy such as solar energy help us to make pollution free world. So it is necessary to use alternative energy.
Answer:
DU = 375 Joules
Explanation:
Given the following data;
Quantity of heat = 500 Joules
Work done = 125 Joules
To find the change in internal energy;
Mathematically, the change in internal energy of a system is given by the formula;
DU = Q - W
Where;
- DU is the change in internal energy.
- Q is the quantity of energy.
- W is the work done.
Substituting into the formula, we have;
DU = 500 - 125
<em>DU = 375 Joules</em>
you have your velocity in m/s you need your total time in seconds and multiply the two to get displacement
1hr =60 sec
so at 1.2m/s traveling (9.5*60(60 seconds in a minute)= 570 seconds is 570*1.2= 684 meters
Since the electric field between the plates is constant
so we can say the relation between potential difference and electric field is given by
here from above relation we can say that is electric field is kept constant then potential difference is directly proportional to the distance between the plates
so here we will say that if the distance between the plates is decreased then the potential difference between the plates will also decreases
So correct answer will be
<u>a) decrease </u>
