Answer:
2950 m
Explanation:
The radius to which the sun must be compressed to become a black hole is equal to the Schwarzschild radius, defined as:
where
G is the gravitational constant
M is the of the sun
c is the speed of light
The mass of the sun is
So, if we substitute the values of the other constants inside the formula, we find the value of the Schwarzschild radius for the sun:
The elevation in reservoir at the rate of flow using is 03m/s is 114m.
The Reynolds range is the ratio of inertial forces to viscous forces. The Reynolds variety is a dimensionless variety used to categorize the fluids structures in which the impact of viscosity is crucial in controlling the velocities or the flow sample of a fluid.
The reason of the Reynolds number is to get a few experience of the relationship in fluid glide between inertial forces (this is those that maintain going by using Newton's first law – an item in motion stays in movement) and viscous forces, this is people who cause the fluid to come back to a forestall because of the viscosity of the fluid.
calculation,
Let L = 100 m pipe
L1 = 150 m pipe
H f = friction losses
Using Reynolds number, relative roughness, friction co- effiicients and friction losses
Substitute the value in equation
Z = 110= 0.48= 3.54
Z = 114m
Therefore water surface elevation at reservoir is 114 meter.
Learn more about rate of flow here:-brainly.com/question/21630019
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Answer:
806.6 N
Explanation:
Given that :
Mass (m) = 74 kg
Acceleration due to gravity (g) = 9.8 m/s²
Acceleration during interval t1 = 1.10 m/s²
Using the relation :
Normal reaction = Mass (g + acceleration at interval t1)
Normal reaction = 74(9.8 + 1.10)
Normal reaction = 74(10.9)
Normal reaction = 806.6 N
<span>We know that v = u + at
He stops when the speed is zero; therefore
0 = 15 - 3.35 t
t = 4.48
It takes 4.48 seconds after the driver turns on the brake for him to stop.
We know
s = ut + (1/2)at</span>²<span>
s = 15*4.48 - *(1/2)(3.25)(4.48)</span>²<span>
s = 33.4 meters
The distance he travels before applying the brakes is:
s = 0.21 * 15
s = 3.15 m
The total distance he travels is:
3.15 + </span>33.4 = 36.55 meters
He will be able to stop in time.