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Kobotan [32]
3 years ago
14

Define measurement with 10 points

Physics
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

the process of comparing unknown quantities with known standards quantities are known as measurement

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Actinium-226 has a half-life of 29 hours. If 10g of actinium-226 disintegrates over a period of 145 hours,
Masteriza [31]

Answer: d) 312.5 mg

Explanation:

This problem can be solved using the Radioactive Half Life Formula:

A=A_{o}.2^{\frac{-t}{h}}  

Where:

A is the remaining amount of Actinium-226

A_{o}=10 g is the initial amount of Actinium-226

t=145 h is the time elapsed

h=29 h is the half life of Actinium-226

Knowing this, let's find A:

A=(10 g) (2)^{\frac{-145 h}{29 h}}  

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In which situation would a space probe most likely experience centripetal acceleration?
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Question: In which situation would a space probe most likely experience centripetal acceleration?

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Centripetal acceleration defined as the rate in change of tangential velocity. Also, as per Newton's second law, any kind of force will be directly proportional to the acceleration attained by the object. So, for centripetal acceleration, the force will be the centripetal force. The centripetal force will be acting on an object rotating in a circular motion with its direction of force towards the center. Thus, centripetal acceleration will be experienced by an object or a space probe when it is in a circular motion. It means the space probe is revolving around a planet.

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