3 years ago

What causes the disease bronchitis?

1 answer:

3 0

Answer:

Acute bronchitis can result from: a virus, for example, a cold or flu virus. a bacterial infection. exposure to substances that irritate the lungs, such as tobacco smoke, dust, fumes, vapors, and air pollution.

Explanation:

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Predict Two objects have unlike charges. How

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A box is 5 cm high, 4 cm wide, and 9 cm long. What is the

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5+4=9+9=18 IS THE VOLUME OF CUBIC CENTIMETRES

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3 years ago

When electrons are moving freely between many positive ions, what type of bond is occuring?

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Answer:

a metallic

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Metal atoms are joined together by metallic bonds. Metals can form cations (positive ions) with a sea of delocalized electrons.

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Two UFPD are patrolling the campus on foot. To cover more ground, they split up and begin walking in different directions. Offic

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Answer:

0.256 hours

Explanation:

Vectors in the plane

We know Office A is walking at 5 mph directly south. Let $X_A$ be its distance. In t hours he has walked

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Office B is walking at 6 mph directly west. In t hours his distance is

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Since both directions are 90 degrees apart, the distance between them is the hypotenuse of a triangle which sides are the distances of each office

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$D=\sqrt{61}t$

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$\sqrt{61}t=2$

$t =\frac{2}{\sqrt{61}}=0.256\ hours$

t is approximately 15 minutes

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(b) Always act on the different bodies in opposite directions

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