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Helen [10]
3 years ago
11

Please help!!!!! (and explain if you can) thank you so SO much!!! *will give brainliest*

Physics
2 answers:
Anna [14]3 years ago
4 0

Answer:

negative because it they oppose they are going to make the ball float (like when tried to put the same sides of magnets to touch)

Explanation:

Marina CMI [18]3 years ago
4 0
I believe it’s negative :)
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If the newly formed metamorphic rock continues to heat, it can eventually melt and become molten (magma). When the molten rock cools it forms an igneous rock. Metamorphic rocks can form from either sedimentary or igneous rocks.

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Your friend decides to generate electrical power by rotating a 100,000 turn coil of wire around an axis in the plane of the coil
MakcuM [25]

Answer:

a) I=35mA

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Explanation:

a) The max emf obtained in a rotating coil of N turns is given by:

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By calculating A and replacing in the formula (1G=10^{-4}T) we get:

A=\pi r^2 =\pi(0.23m)^2=0.16m^2

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b)

we have that

I_{rms}=\frac{I}{\sqrt{2}}=\frac{0.0498A}{\sqrt{2}}=0.035A

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hope this helps!!

6 0
2 years ago
 An ultrasound pulse used in medical imaging has a frequency of 5 MHz and a pulse width of 0.5 us. Ap- proximately how many osci
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Answer:

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7 0
1 year ago
Read 2 more answers
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