Answer:
v₂ = 32.4 cm/s
Explanation:
From the continuity equation it is clear that:
Volume Flow Rate Before Plaque = Volume Flow Rate In Plaque
Q₁ = Q₂
A₁v₁ = A₂v₂
where,
A₁ = Area of artery before plaque build up = πd²/4 = π(1.1 cm)²/4 = 0.95 cm²
A₂ = Area of artery with plaque build up = πd²/4 = π(0.75 cm)²/4 = 0.44 cm²
v₁ = velocity of blood flow in artery before plaque region = 15 cm/s
v₂ = velocity of blood in artery in plaque region = ?
Therefore,
(0.95 cm²)(15 cm/s) = (0.44 cm²)(v₂)
v₂ = (14.25 cm³/s)/(0.44 cm²)
<u>v₂ = 32.4 cm/s</u>
Answer:
a hypothesis is testable then why would it be a hypothesis
Answer:
68:39
Explanation:
We have to find the ratio of the man's running speed to the sidewalk's speed.
Let running speed of man=x
Sidewalk's speed=y
When man running in the same direction as side walk is moving.
Then, total speed=x+y
Time=2.9 s
When a man running in opposite direction as the side walk is moving.
Then, total speed =x-y
Time =10.7 s
Distance traveled in both cases remain same.
Suppose , d is the distance from one end to another end.








Hence, the ratio of the man's running speed to the sidewalk's speed =68:39
Answer and Explanation:
DE BROGLIE 'S HYPOTHESIS :
- According to De broglie the matter have dual nature it can behave as particle as well as wave
- According to this hypothesis all matter have wave like property and having wavelength.
- The de broglie wavelength is given by
here h is plank's constant and P is momentum - This hypothesis determines the probability of finding the object at a give point
False
I beleive...............