A body has centripetal acceleration with magnitude <em>a</em> such that
<em>a</em> = <em>v</em> ² / <em>R</em>
where <em>v</em> is the body's tangential speed and <em>R</em> is the radius of the circular path the body takes.
Convert the child's angular speed <em>ω</em> into linear/tangential speed. Assume angular speed is measured in rad/s and tangential speed in m/s. For every 2<em>π</em> rad that he revolves around his mother, the child travels a distance of 2<em>πR</em> m, so that
<em>ω</em> = (<em>ω</em> rad/s) • (2<em>πR</em>/(2<em>π</em>) m/rad) = <em>Rω</em> = <em>v</em>
Then the child's acceleration is
<em>a</em> = (<em>Rω</em>)² / <em>R</em> = <em>Rω</em> ²
When the mother pulls her arms in, the distance <em>R</em> gets halved and changes to <em>R</em>/2, so that the child's new acceleration is
<em>a</em> = (<em>R</em>/2 • <em>ω</em>)² / (<em>R</em>/2) = (1/4 • (<em>Rω</em>)²) / (1/2 • <em>R</em>) = 1/2 <em>Rω</em> ²
so the child's centripetal acceleration decreases by a factor of 2.
Answer:
C.
Explanation:
We know that the magnetic moment of electron is in same direction as it's spin so it's spin flip from down to up.
The correct answer is C that is . It flips from spin down to spin up.
Answer: Chilling with my homies
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Chicken chicken wing chicken chicken wing
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Chicken wings, Chicken wings
Hotdog and baloney
Chicken and macaroni
Chillin' wit mah homiiieees
Chicken wings, Chicken wings
Hotdog and baloney
Chicken and macaroni
Chillin' wit mah homiiieees homiiieeees
Chicken wings, Chicken wings
Hotdog and baloney
Chicken and macaroni
Chillin' wit mah homiiieees
Chillin' wit mah
Explanation:
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Answer:
Distance of Earth from the Sun has nothing to do with the seasons only the tilt is responsible for the change in seasons.
Explanation:
The Earth's tilt does cause the seasons but the distance from the sun and has nothing to do with the change in seasons. In June, when the Northern Hemisphere is tilted in the direction of the Sun during the Northern Hemisphere summer the Earth is actually farthest from the Sun. In January, when the Southern Hemisphere is tilted in the direction of the Sun during the Northern Hemisphere winter the Earth is actually closest to the Sun. This is caused due to the elliptical orbit of the Earth. So, distance of Earth from the Sun has nothing to do with the seasons.
The water pressure is greatest at point B which has a larger diameter in this scenario.
<h3>What is Pressure?</h3>
This is defined as the force per unit area of a substance with its unit being Pascal.
The larger diameter will have more force acting on the sides which translates to a greater pressure.
Read more about Pressure here brainly.com/question/25736513
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