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3 years ago

Which refers to information gathered by the systematic study of nature?

Physics

2 answers:

Vadim26 [7]3 years ago

7 0

Answer:

hypothesis, sorry if I'm wrong

Semenov [28]3 years ago

4 0

Answer:

it is scientific knowledge

Explanation:

got i right on edge

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3 years ago

Is parenting nature or nurture

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Three children are riding on the edge of a merry‑go‑round that has a mass of 105 kg105 kg and a radius of 1.80 m1.80 m . The mer

rewona [7]

Answer:

New angular speed changes from 16 rpm to 19.95 rpm

Explanation:

In the given system the angular momentum of the system is conserved

initial angular momentum of the system

$L_{i}=I_{1}\omega _{1}\\\\\omega _{1}=\frac{8\pi }{15}rad/sec\\\\I_{1}=\frac{1}{2}mr^{2}+(m_{1}+m_{2}+m_{3})r^{2}\\\\I_{1}=\frac{1}{2}\times 105\times 1.8^{2}+(33+28+28) \times 1.8^{2}=458.46kgm^{2}\\\\\therefore L_{i}=458.46\times \frac{8\pi }{15}=768.16$

When 28 kg child moves to the center the moment of inertia changes thus we have

$I_{2}=\frac{1}{2}mr^{2}+(m_{1}+m_{2})r^{2}\\\\I_{1}=\frac{1}{2}\times 105\times 1.8^{2}+(33+28) \times 1.8^{2}=367.74kgm^{2}\\\\\therefore L_{f}=367.74\times \omega _{f}$

Equating initial and final angular momentum we get

$I_{2}=\frac{1}{2}mr^{2}+(m_{1}+m_{2})r^{2}\\\\I_{1}=\frac{1}{2}\times 105\times 1.8^{2}+(33+28) \times 1.8^{2}=367.74kgm^{2}\\\\\therefore L_{f}=367.74\times \omega _{f}\\\\\omega _{f}=\frac{768.16}{367.74}=2.1rad/sec\\\\N_{2}=19.95rpm$

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3 years ago

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Answer:

<h2>Lines of Force around an Electromagnet</h2>

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3 years ago