The two --diameter cylinders in FIGURE , closed at one end, open at the other, are joined to form a single cylinder, then the air inside is removed.
A. How much force does the atmosphere exert on the flat end of each cylinder?
B. Suppose one cylinder is bolted to a sturdy ceiling. How many football players would need to hang from the lower cylinder to pull the two cylinders apart?
ASSESS : football players each of mass are needed to pull the two cylinders apart, which is quite large.
A force is an external agent modifying a body's states of rest or motion. There is a magnitude and a direction to it. The force's direction is known as the force's direction, and the point where force is applied is known as the point where force is applied.
A spring balance is used to calculate the force. Newton is the unit of force .
Force does the atmosphere exert on the flat end of each cylinder
Number of football players need to pull the two cylinders
(A)Force exerted on the flat end,
(B)Force exerted on the cylinder ,
Where is the number of football players needed to pull the cylinders apart
ASSESS: Then that will take football players, each weight kilograms, to separate two cylinders, which are really substantial.
Postural hypotension is the occurrence of low systolic blood pressure when a person stands up too quickly from a reclining position. A brain blood pressure lower than of can cause fainting or lightheadedness. In a healthy adult, the automatic constriction and expansion of blood vessels keep the brain blood pressure constant while posture is changing, but disease or aging can weaken this response. If the blood pressure in your brain is of while lying down, what would it be when you stand up if this automatic response failed? Assume your brain is from your heart and the density of blood is .
Geologists place tiltmeters on the sides of volcanoes to measure the displacement of the surface as magma moves inside the volcano. Although most tiltmeters today are electronic, the traditional tiltmeter, used for decades, consisted of two or more water-filled metal cans placed some distance apart and connected by a hose. FIGURE shows two such cans, each having a window to measure the water height. Suppose the cans are placed so that the water level in both is initially at the mark. A week later, the water level in can is at the mark.
A. Did can move up or down relative to can ? By what distance?
B. Where is the water level now in can ?
94% of StudySmarter users get better grades.Sign up for free