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garri49 [273]
4 years ago
10

Three horses are side-by-side on a merry-go-round: one at the edge, one near the axis, and one in between. Each horse has the sa

me angular speed. Which horse has the greatest linear speed?
Physics
1 answer:
sineoko [7]4 years ago
4 0

Answer:

one at the edge

Explanation:

The relation between the linear velocity and the angular velocity is given by

v = r x ω

Where, v be the linear velocity, ω be the angular velocity and r be the radius of the circular path.

As the angular velocity is constant, thus, the linear velocity depends on the radius of circular path.

So, the horse which is near to the edge has maximum radius of circular path in which it is rotating. So, the horse which is at the edge of the merry go round has maximum linear speed.

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Plz help with this paper.
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Answer:

1. a) Draw a line towards the right side from the engine

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Compressible for only solid

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b) The answer is 'c'

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4 0
3 years ago
The total of 8 and 13
Stella [2.4K]
The total is 21. If you use a calculator or count with your fingers it can help make the answer easier so in the end you will get 21 as your total.


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3 years ago
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A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as officials boat pulls up ne
KonstantinChe [14]

Answer:

They are 7.4m apart.

Explanation:

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3 years ago
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A ball rolls onto the path of your car as you drive down a quiet neighborhood street. To avoid hitting the child that runs to re
ehidna [41]

Answer:

F = 7.143 kN

Explanation:

given,

time taken to apply break = 1.05 s

car slows down from 15 m/s to 9 m/s

mass of the car = 1250 Kg

force is equal to the change in momentum with respect to time.

F = \dfrac{\Delta P}{t}

F = \dfrac{m(v_f - v_i)}{t}

F = \dfrac{1250\times (9 - 15)}{1.05}

F = \dfrac{-7500}{1.05}

F = -7142.85 N

F = - 7.143 kN

Force is acting opposite direction of velocity of car i.e. the sign is negative.

7 0
3 years ago
Is it safe to drive your 1600-kg car at speed 34 m/s around a level highway curve of radius 190 m if the effective coefficient o
adoni [48]

Answer:

It is unsafe

Explanation:

v = Velocity of car = 34 m/s

r = Radius of turn = 190 m

\mu = Coefficient of static friction = 0.5

m = Mass of car = 1600 kg

g = Acceleration due to gravity = 9.81 m/s²

The centripetal force is given by

F_c=m\frac{v^2}{r}\\\Rightarrow F_c=1600\frac{34^2}{190}\\\Rightarrow F_c=9734.73\ N

The frictional force is given by

F_f=\mu mg\\\Rightarrow F_f=0.5\times 1600\times 9.81\\\Rightarrow F_f=7848\ N

If the centripetal force is greater than the frictional force then the car will slip which makes it unsafe.

Here, the centripetal force is greater than the frictional force which makes it unsafe to drive it at that speed.

4 0
3 years ago
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