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Juli2301 [7.4K]
3 years ago
7

A=i+j-kb=j+k

TexFormula1" title="a = i + j - k \\ b = j + k" alt="a = i + j - k \\ b = j + k" align="absmiddle" class="latex-formula">
​
Physics
1 answer:
olga nikolaevna [1]3 years ago
4 0

Answer:

¿

Explanation:

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An offshore rig begins to spill oil in a circular patch centered on the rig. If the radius ofthe oil spill increases at a rate o
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Answer:

Explanation:

The area of a circle is given b

A=πr²

Then,

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Also give that,

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dA/dt=dA/dr×dr/dt

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Answer:

E

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Tĩnh lực tĩnh điện [lực cu lông] giữa 2 điện tích điểm q1,q2 biết q1=2.10-9 q2=4.10-9 r=3cm
Anettt [7]
  • q1=2×10^{-9}C
  • q2=4×10^{-9}C
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Using coulmb's law

\\ \bull\tt\dashrightarrow F=k\dfrac{q1q2}{r^2}

\\ \bull\tt\dashrightarrow F=8.98\dfrac{2\times 10^{-9}\times 4\times 10^{-9}}{(0.3)^2}

\\ \bull\tt\dashrightarrow F=8.98\dfrac{8\times 10^{-18}C^2}{0.09m^2}

\\ \bull\tt\dashrightarrow F=\dfrac{71.84\times 10^{-18}C^2}{0.09m^2}

\\ \bull\tt\dashrightarrow F=798.2\times 10^{18}Nm^2/C^2

\\ \bull\tt\dashrightarrow F=7.9\times 10^{16}Nm^2/C^2

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3 years ago
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Answer: 3.0 m

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law of conservation of mechanical energy

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mgh=1/2mv²

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