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3 years ago

10

A. a drug that increases the action of the central nervous system

2 answers:

german3 years ago

8 0

Answer:

a is 3 b is 4 c is 5 d is 1 e is 2

Explanation:

Nicotine is addictive, which it is hard for people to quit. Leokoplakia is caused by smoking. Tar can sometimes be found on roads because of so much.

scoundrel [369]3 years ago

7 0

Answer:

a is 3 b is 4 c is 5 d is 1 e is 2

Explanation:

experience :)

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April is writing a report on the nervous system for biology class. Choose the correct way to complete each sentence.

ohaa [14]

Hii! I believe the answers are Sympathetic, Digestion, and Adrenaline. (:

6 0

3 years ago

Which of the following BEST describes a body in equilibrium?

sukhopar [10]

$\textsf {\large{\underline { \underline {SOLUTION:-}}}}$

⇰Let O be the point of observation on the ground OX.

⇰Let A and B be the two positions of the jet.

$\bf➠Then, \angle XOA=60⁰ \: and \: \angle \: XOB=30⁰ \\ \\$

$\bf ➠Draw \: AL \perp \: OX \: and \: BM \perp \: OX \\ \\$

$\bf \:⇰ Let \: AL=BM=h \: meters. \\ \\$

$\bf \: ⇰ \: Speed \: of \: Jet = 720 \: km/hr\\$

$\bf = \huge( \small \: 720 \times \frac{5}{18} \huge) \small \: m / s\\$

$\bf = 200 \: m/s$

$\bf \:➥ Time \: taken \: to \: cover \: the \: distance \: AB=15 \: sec \\ \\$

$\bf➥ Distance \: covered =(speed×time) \\ \\$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \bf = (200 \times 15)m = 3000m \\ \\$

$\bf \therefore LM=AB=3000m \\ \\$

${ \bf \: ⇰ \: Let \: OL} = x \: \bf m \\ \\$

$\bf➥From \: right \: \triangle OLA, \: we \: have: \\$

$\bf \frac{OL}{AL} =cot \: 60⁰= \frac{1}{ \sqrt{3} } \implies \frac{x}{h} = \frac{1}{ \sqrt{3} } \\ \\$

$\bf \implies \: x = \frac{h}{ \sqrt{3} } \: \: \: \: \: \: \: ....(1) \\ \\$

$\bf \:➥ From \: right \: \triangle \: OMB,we \: have: \\$

$\bf\frac{OM}{BM} =cot30⁰= \sqrt{3} \\ \\$

$\bf \implies \: \frac{x + 3000}{h} = \sqrt{3} \\ \\$

$\bf[ \boxed{➯OM=OL+LM=OL+AB=(x+3000)m \: and \: BM=h \: m]}$

$\bf \implies \: x + 3000 = \sqrt{3} h \\$

$\bf \implies \: x = ( \sqrt{3} h - 3000) \: \: \: \: \: \: ....(2) \\$

⇰ Equating the value of x from (1) and (2),we get;

$\bf \: \sqrt{3} h - 3000 = \frac{h}{ \sqrt{3} } \\ \\$

$\implies \bf \: 3h - 3000 \sqrt{3} = h \\$

$\bf \implies \: 2h = (3000 \times \sqrt{3} ) = (3000 \times 1.762) \\$

$\bf \implies \: h = (3000 \times 0.866) = 2598 \\ \\$

$\bf \:➥ Hence \: ,the \: required \: height \: is \: \boxed{ \boxed{ \bf2598 \: m.}} \\ \\$

☆To View full answer drag your screen ⇰

4 0

3 years ago

Read 2 more answers

Which of the following is/are sometimes included as an additional macronutrient resulting in a 3 in 1 formulation

Elan Coil [88]

Answer:

The answer is either C. Vitamins or D. Dextrose

Explanation:

6 0

3 years ago

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The first genome sequence was for a virus. <br> a. True<br> b. False

Schach [20]

That is true it was for a virus

5 0

3 years ago

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Which best describes a consequence of steroid abuse

sveta [45]

> You can develop severe acne, oily skin and hair.

> Have sever hair loss.

> Get liver disease, such as liver tumors and cysts.

> Have a major kidney disease.

> Suffer from heart disease, such as heart attack and stroke.

> And also have altered mood, irritability, increased aggression, depression or suicidal tendencies.

" hope this helped"

7 0

3 years ago