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ki77a [65]
3 years ago
14

Atmospheric pressure decreases as altitude increases. in other words, there is more air pushing down on you at sea level, and th

ere is less air pressure pushing down on you when you are on a mountain. if pentane (c5h12), heptane (c7h16), and heptanol (c7h15oh) are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling
Physics
1 answer:
xenn [34]3 years ago
4 0
<span>The expected boiling point of a substance increases with an increasing molar mass of the substance. So I would expect the lighter compounds to boil at lower temperature. Also more polar molecules tend to boil at higher temperature. Pentane is the lightest of all three compounds, so it should boil the soonest. Heptane is a lot heavier than Pentane, but slightly lighter than Heptanol. So it should boil next. Heptanol is the heaviest of all of the molecules and is also quite polar compared to heptane. So it should have the highest of all the boiling points.</span>
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A proton moves in the negative x-direction through a uniform magnetic field in the negative y-direction what is the direction of
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A proton travels through a constant magnetic field in the negative y-direction while moving in the negative x-direction. The proton will be subject to a magnetic pull that is directed into the page. Option B is correct.

<h3>What is the right-hand thumb rule?</h3>

Hold a current-carrying conductor in your right hand with your thumb pointing in the direction of the current then wrap your fingers around the conductor and orient them in the direction of the magnetic field lines.

A proton travels through a constant magnetic field in the negative y-direction while moving in the negative x-direction.

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2 years ago
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3 years ago
In a simple RC circuit, at t=0 the switch is closed with the capacitor uncharged. If C=30µF, =50V and R=10k, what is the poten
sergij07 [2.7K]

Answer:

Voltage across the capacitor is 30 V and rate of energy across the capacitor is 0.06 W

Explanation:

As we know that the current in the circuit at given instant of time is

i = 2.0 mA

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now we know by ohm's law

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Now we know that

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here rate of change in energy of the capacitor is given as

\frac{dU}{dt} = \frac{q}{C} \frac{dq}{dt}

\frac{dU}{dt} = (30)(2 mA)

\frac{dU}{dt} = 0.06 W

3 0
3 years ago
Which rf characteristic best determines the range of a 2.4 ghz ism signal?
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B. Energy

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