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3 years ago

Sulfur oxides (SO2) are responsible for

Physics

2 answers:

tigry1 [53]3 years ago

5 0

B green house gases is the correct problem

Alex3 years ago

3 0

C) producing acid rain

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Earth’s plates move only a few _____ per year. <br><br> a. centimeters <br> b. meters

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centimeters

Explanation:

earth's plates move only a few centimeters per year.

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3 years ago

Wind erosion can be reduced by

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You can reduce cultivated fallow

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What would happen to your blood in space without a spacesuit?

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It'd be frozen I think. either that or it'd be sucked out of oxygen

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3 years ago

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A resistor R, inductor L, and capacitor C are connected in series to an AC source of rms voltage ΔV and variable frequency. If t

Alexandra [31]

Answer:E= $\frac{\pi R\left ( \Delta V\right )^2\sqrt{LC}}{\left ( R^2+\frac{9}{4}\left (\frac{L}{C} \right )\right )}$

Explanation:

We know resonant frequency is given by

$\omega_0=\frac{1}{\sqrt{LC}}$

and the operating frequency is given by

$\omega =2\omega_0=\frac{2}{\sqrt{LC}}$

The capacitance reactance is given by

$X_c=\frac{1}{\omega C}=\frac{\sqrt{LC}}{2C}=\frac{1}{2}\sqrt{\frac{L}{C}}$

inductive reactance is given by

$X_L=\omega L=\left ( \frac{2}{\sqrt{LC}}\right )L=2\sqrt{\frac{L}{C}}$

Thus impedance is

$Z=\left ( R^2+\left (X_L-X_C \right )^2 \right )^\frac{1}{2}$

$Z=\left ( R^2+\left (2\sqrt{\frac{L}{C}}-\frac{1}{2}\sqrt{\frac{L}{C}} \right )^2 \right )^\frac{1}{2}$

$Z=\left ( R^2+\frac{9}{4}\left ( \frac{L}{C} \right ) \right )^\frac{1}{2}$

The average power delivered is

$P_{avg.}=\frac{\Delta V^2}{Z}cos\phi =\frac{\left ( \Delta V\right )^2}{Z}\left (\frac{R}{Z} \right )$

$P_{avg.}=\frac{\left (\Delta V \right )^2R}{\left ( R^2+\frac{9}{4}\left (\frac{L}{C} \right )\right )}$

Energy Delivered in one cycle is given by

$E=P_{avg}T$

$E=\frac{\left (\Delta V \right )^2R}{\left ( R^2+\frac{9}{4}\left (\frac{L}{C} \right )\right )}\left ( \frac{2\pi }{\frac{2}{\sqrt{LC}}}\right )$

E= $\frac{\pi R\left ( \Delta V\right )^2\sqrt{LC}}{\left ( R^2+\frac{9}{4}\left (\frac{L}{C} \right )\right )}$

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3 years ago

A downward force of 18-N is applied to a book sitting on a table. The table where the book is placed provides a static friction

slavikrds [6]

Force divided by mass

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3 years ago

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