Answer:
Vo = 4.5 [V]
Explanation:
In order to calculate this Vo voltage, we must first calculate the current through the entire circuit. For this, we perform a sum of voltages equal to zero.
ΣV = 0
![-9 +6*I+2*I+3 =0\\-6+8*I=0\\I = 6/8\\I=0.75[amp]](https://tex.z-dn.net/?f=-9%20%2B6%2AI%2B2%2AI%2B3%20%3D0%5C%5C-6%2B8%2AI%3D0%5C%5CI%20%3D%206%2F8%5C%5CI%3D0.75%5Bamp%5D)
We again perform a sum of voltages equal to zero but this time we do not include the voltage source of 3V as well as the resistance of 2[ohm]. It is as if the circuit is open between the ports of Vo.
ΣV = 0
![V_{o}-9+(6*0.75) = 0\\\\V_{o} = 4.5 [V]](https://tex.z-dn.net/?f=V_%7Bo%7D-9%2B%286%2A0.75%29%20%3D%200%5C%5C%5C%5CV_%7Bo%7D%20%3D%204.5%20%5BV%5D)
Answer:
6.40 m/s
Explanation:
Here we have to consider the conservation of energy
Potential energy of a object = Kinetic Energy
Mgh = 1/2 M (v)2
V = root 2gh
V = root 2*10*20.5
V = 6.40 m/s
For a smooth surface, reflected light rays travel in the same direction. This is called specular reflection. For a rough surface, reflected light rays scatter in all directions. This is called diffuse reflection. Diffuse reflection is when light hits an object and reflects in lots of different directions.
