Answer:
Explanation:
a ) The volume of blood flowing per second throughout the vessel is constant .
a₁ v₁ = a₂ v₂
a₁ and a₂ are cross sectional area at two places of vessel and v₁ and v₂ are velocity of blood at these places .
2A x v₁ = A x .40
v₁ = .20 m /s
b )
Let normal pressure be P₁ when cross sectional area is 2A and at cross sectional area A , pressure is P₂
Applying Bernoulli's theorem
P₁ + 1/2 ρv₁² = P₂ + 1/2 ρv₂²
P₁ - P₂ = 1/2 ρ(v₂² - v₁² )
= .5 x 1060 ( .4² - .2² )
= 63.6 Pa .
Answer:
true
Explanation:
takes time for most plates to move but throughout time they keep moving just at a slow pace
Heat always flows from higher temperature to lower temperature. So option A. heat will flow from the air into the coolant is the correct answer.
If you let a friend ride with you, increasing the mass does increase the net force on the system, but it also increases the inertia. a=Fnetm. Since both the net force and mass are increased they still cancel, leaving the acceleration the same.
<h3>Further explanation
</h3>
Inertia is the tendancy of a moving object to keep moving in a straight line or of any object to resist a change in motion.
According to the picture below, we choose x-direction parallel to the inclined surface. Our positive direction is to the right. Hence, we will calculate the acceleration when riding solo first:


Put
into

From the equation 3, we found that the acceleration does not depend on the mass of the object. Notice that:
is constant
is constant,
is constant
So that,
is constant whatever the amount of the mass is
<h3>Learn more</h3>
- Learn more about inertia brainly.com/question/720714
<h3>Answer details</h3>
Grade: 9
Subject: physics
Chapter: inertia
Keywords: inertia