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Anna35 [415]
3 years ago
5

Giúp em câu này với ạ,em cảm ơn

Physics
1 answer:
mash [69]3 years ago
5 0
Ảnh lỗi hả bạn ơi, gửi lại ảnh đi
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A 14000N car traveling at 25m/s rounds a curve of radius 200m. Find the following: a. The centripetal acceleration of the car.
tamaranim1 [39]

Answer:

Explanation:

Given

Weight of car W=14,000\ N

mass of car m=\frac{14,000}{9.8}=1428.57\ N

velocity of car v=25\ m/s

radius r=200\ m

(a)Centripetal acceleration is given by

a_c=\frac{v^2}{r}

a_c=\frac{25^2}{200}

a_c=3.125\ m

(b)Force that provide centripetal acceleration

F=F_c=\frac{mv^2}{r}

F=\frac{1428.57\times 25^2}{200}

F=4464.285\ N

(c)Friction force between car and tires is given by

=\mu N

where \mu=coefficient of static friction

N=normal reaction

Centripetal force will balance the friction force

F_c=F_r

4464.285=\mu \times 1428.57\times 9.8

\mu =0.318

6 0
3 years ago
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katrin [286]
The most appropriate answer is C. the incest taboo facilitates the socialization of children and avoids role confusion. 
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In a nuclear fusion reaction, what state is matter in?
kenny6666 [7]
<span>the matter is in chemical <span>plasma
 </span></span>
<span>Alternatively d<span>)

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Ahat [919]

Answer:

7. d. England during the Age of Enlightenment

8. a. State governments do not usually act together

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The third and fourth methods of amending the Constitution will be much harder to use because state governments simply do not usually act together as they most times have ideological differences. The sheer number of states it would take to unite for these methods to be used makes this impractical.

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CAUSE YPU WANT TO

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