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Whitepunk [10]
3 years ago
10

Newton observed the action of a prism on white light and on red light. Because he

Physics
1 answer:
konstantin123 [22]3 years ago
3 0

Hey

It was REFLECTIVE on him

Im sure thats the answer.

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kolbaska11 [484]

Answer: a

Explanation:

when a car dives on a road it a makes friction but it need something to push it or start it which is the balloon in this example

(sorry if im wrong)

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3 years ago
What is the meaning of galaxy?
mariarad [96]
<span>a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.</span>
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4 years ago
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400 gallons of pesticide is accidentally spilled into a lake and uniformly mixes with the water. The volume of the lake includin
svet-max [94.6K]

Answer:

t=27725.8minutes

Explanation:

To determinate use the law the change of volume in determinate time is derivate so:

\frac{dV}{dt}=flowin-flowout

The flow in is zero and the flow out is modeling with V as the volume out in the volume of the lake in the reason of change.

\frac{dV}{dt}=0-(\frac{V}{10x10^{8}})*5000\\\frac{dV}{dt}=-5x10^{-5}*V \\dV*V=-5x10^{-5}*dt

Integrate to get the volume function

\int\limits{\frac{1}{V}}\, dv=\int\limits{-5x10^{-5} }\, dt\\ ln(V)=-5x10^{-5}*t\\ln*e(V)=C*e^{-5x10^{-5}*t}\\

The find the constant C in the time t=0 the volume is knowing so:

t=0s\\V=400\\V=C*e^{0}\\C=400

V=400*e^{-5x10^{-5}*t}

The volume is 1 part per million so:

\frac{V}{10x^{8}}=\frac{1}{10x^{6}}\\  V=100

V=400*e^{-5x10^{-5}*t}\\100=400*e^{-5x10^{-5}*t}\\\frac{100}{400}=e^{-5x10^{-5}*t}\\ln*\frac{1}{4}=ln*e^{-5x10^{-5}*t}\\-ln(4)=-5x10^{-5}*t\\ t=\frac{-ln(4)}{-5x10^{-5}}=27725.88\\t=27725.8minutes

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Why can objects be made to float in a magnetic field?
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I would say that the answer is C
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