Answer:
The power in this flow is
Explanation:
Given that,
Distance = 221 m
Power output = 680 MW
Height =150 m
Average flow rate = 650 m³/s
Suppose we need to calculate the power in this flow in watt
We need to calculate the pressure
Using formula of pressure
Where, = density
h = height
g = acceleration due to gravity
Put the value into the formula
We need to calculate the power
Using formula of power
Put the value into the formula
Hence, The power in this flow is
Answer: Option (B) is the correct answer.
Explanation:
Expression for centripetal acceleration is as follows.
a = .......... (1)
Also, we know that
........... (2)
Putting the value from equation (2) into equation (1) as follows.
a =
=
As,
a =
or,
Now, we will reduce a to . So, new value of will be equal to .
Therefore, value of new period will be as follows.
=
Thus, we can conclude that the new period is equal to .
Nothing is showing below so I cant help
Answer: B) exactly the same as the initial momentum.
Explanation:
An inelastic collision occurs when the elements that collide remain together after the collision, and althogh the kinetic energy is not conserved because is transformed into other kinds of energy (thermal energy, for example), the linear momentum does.
This means the initial momentum before the collision will be equal to the final momentum after the collision: