What distinguishes a heart attack from heart failure.
a.
a heart attack results from poor blood flow, while heart failure involves a total interruption of blood flow.
b.
both heart attack and heart failure result in heart tissue death, but more tissue dies as a result of heart failure.
c.
heart tissue dies during a heart attack, while heart failure results in systemic oxygen deficiency.
d.
heart failure results in body tissues receiving such a high level of oxygen that it is toxic.

select the best answer from the choices provided.

a
b
c
d

The correct answer would be option A.

Explanation:

A heart attack results from poor blood flow while heart failure involves a total interruption of blood flow. There are arteries in our heart that pump the oxygenated blood to the heart and takes out the de oxygenated blood from the heart. In heart attack, this flow of blood is blocked, resulting in the poor flow of blood to the heart. But heart failure is a gradual process, in which the heart tissues become dead resulting in the total interruption of blood supply to the heart, causing a heart failure.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length