Answer : Total energy dissipated is 10 J
Explanation :
It is given that,
Time. t = 10 s
Resistance of the resistors, R = 4-ohm
Current, I = 0.5 A
Power used is given by :
![P=\dfrac{E}{t}](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7BE%7D%7Bt%7D)
Where
E is the energy dissipated.
So, E = P t.............(1)
Since, ![P=I^2R](https://tex.z-dn.net/?f=P%3DI%5E2R)
So equation (1) becomes :
![E=I^2Rt](https://tex.z-dn.net/?f=E%3DI%5E2Rt)
![E=(0.5\ A)^2\times 4\Omega \times 10\ s](https://tex.z-dn.net/?f=E%3D%280.5%5C%20A%29%5E2%5Ctimes%204%5COmega%20%5Ctimes%2010%5C%20s)
![E=10\ J](https://tex.z-dn.net/?f=E%3D10%5C%20J)
So, the correct option is (3)
Hence, this is the required solution.
It consists of our Solar system. Also, it contains many stars and alot of dust and gases. Our milky way is a galaxy full of amazing stuff, many stars blow up and cause auroras in the sky. If you go to watch the aurora borealis(northern lights) , its amazing and beautiful. The sky turns green and blue and the stars appear.
maximum allowed value of the speed in roller coaster is given as
![v = 20 m/s](https://tex.z-dn.net/?f=v%20%3D%2020%20m%2Fs)
now from kinematics we can say
![v^2 - v_i^2 = 2 a s](https://tex.z-dn.net/?f=v%5E2%20-%20v_i%5E2%20%3D%202%20a%20s)
here initial speed will be
![v_i = 0](https://tex.z-dn.net/?f=v_i%20%3D%200)
acceleration is due to gravity
![a = 9.8 m/s^2](https://tex.z-dn.net/?f=a%20%3D%209.8%20m%2Fs%5E2)
now we can use this to find the height
![20^2 - 0^2 = 2 * 9.8* h](https://tex.z-dn.net/?f=20%5E2%20-%200%5E2%20%3D%202%20%2A%209.8%2A%20h)
![400 = 19.6 *h](https://tex.z-dn.net/?f=400%20%3D%2019.6%20%2Ah)
![h = 20.4 m](https://tex.z-dn.net/?f=h%20%3D%2020.4%20m)
so maximum allowed height will be 20.4 m
Answer:4-strikes the plane at same time as the other body
Explanation:
Given
If both bodies is falling on a horizontal plane and second body is given an acceleration in horizontal direction then it does not change the time to reach the Horizontal Plate as there is no change in vertical direction.
Horizontal acceleration will give only horizontal range and horizontal velocity.