3 years ago

If the half-life of a decaying isotope is 10 years, which statement is true after 10 years?

Physics

1 answer:

Alja [10]3 years ago

3 0

Answer:

no is the most expensive but u have

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it is light

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3 years ago

A girl on a spinning amusements park is 12m from the center of the ride and has a centripetal acceleration of 17 m/s^2. What is

Tanya [424]

Answer: 14.28 m/s

Explanation:

Assuming the girl is spinning with uniform circular motion, her centripetal acceleration $a_{c}$ is given by the following equation:

$a_{c}=\frac{V^{2}}{r}$ (1)

Where:

$a_{c}=17 m/s^{2}$ is the centripetal acceleration

$V$ is the tangential speed

$r=12 m$ is the radius of the circle

Isolating $V$ from (1):

$V=\sqrt{a_{c}r}$ (2)

$V=\sqrt{(17 m/s^{2})(12 m)}$

Finally:

$V=14.28 m/s$ This is the girl's tangential speed

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Of course harder

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Just imagone the floor is wet and you walk on it, do u feel it hard or easy to walk? :D

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2 years ago

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