Answer: 259.2 KJ
Explanation:
The formula calculate work don in a circuit is given by :-
, where Q is charge and V is the potential difference.
The formula to calculate charge in circuit :-
, where I is current and t is time.
Given : Current : ![I=3A](https://tex.z-dn.net/?f=I%3D3A)
Potential difference : ![V=12\ V](https://tex.z-dn.net/?f=V%3D12%5C%20V)
Time : ![t=2\ hr=2(3600)\text{ seconds}=7200\text{ seconds}](https://tex.z-dn.net/?f=t%3D2%5C%20hr%3D2%283600%29%5Ctext%7B%20seconds%7D%3D7200%5Ctext%7B%20seconds%7D)
Now, ![Q=3(7200)=21,600\ C](https://tex.z-dn.net/?f=Q%3D3%287200%29%3D21%2C600%5C%20C)
Then, ![W=(21600)(12)=259,200\text{ Joules}=259.2\text{ KJ}](https://tex.z-dn.net/?f=W%3D%2821600%29%2812%29%3D259%2C200%5Ctext%7B%20Joules%7D%3D259.2%5Ctext%7B%20KJ%7D)
Hence, the work done = 259.2 KJ
Answer:
D...............................
Answer:
answer is option (c) child labour
I’m not sure I think it’s A
When Janet leaves the platform, she's moving horizontally at 1.92 m/s. We assume that there's no air resistance, and gravity has no effect on horizontal motion. There's no horizontal force acting on Janet to make her move horizontally any faster or slower than 1.92 m/s.
She's in the air for 1.1 second before she hits the water.
Moving horizontally at 1.92 m/s for 1.1 second, she sails out away from the platform
(1.92 m/s) x (1.1 sec) = <em>2.112 meters</em>