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Mice21 [21]
3 years ago
6

A monkey has a mass of 3200 grams is moving at a speed of 7.2 m/s rounds a corner with a radius of 12.5 meters. What are the cen

tripetal force and acceleration of the monkey?
pls fast in almost 15 minutes, I will give brainliest if the answer is correct
Physics
1 answer:
Rashid [163]3 years ago
8 0

Answer:

The value is F =13.27 \  N

Explanation:

From the question we are told that

     The mass is m = 3200 \ g = 3.2 \ kg

     The speed is v = 7.2 \ m/s

     The radius is r = 12.5 \ m

     

Generally the centripetal force is mathematically represented as

        F = m * \frac{v^2}{r}

=>     F = 3.2 * \frac{7.2^2}{12.5}

=>     F =13.27 \  N

   

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3 years ago
How many lenses with different focal lengths can be obtained by combining two surfaces whose radii of curvature are 4.00 cm and
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Answer:

The lenses with different focal length are four.

Explanation:

Given that,

Radius of curvature R₁= 4

Radius of curvature R₂ = 8

We know ,

Refractive index of glass = 1.6

When, R₁= 4, R₂ = 8

We need to calculate the focal length of the lens

Using formula of focal length

\dfrac{1}{f}=(n-1)(\dfrac{1}{R_{1}}+\dfrac{1}{R_{2}})

Put the value into the formula

\dfrac{1}{f}=(1.6-1)(\dfrac{1}{4}+\dfrac{1}{8})

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Put the value into the formula

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Put the value into the formula

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\dfrac{1}{f}=\dfrac{3}{40}

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When , R₁= -4, R₂ = -8

Put the value into the formula

\dfrac{1}{f}=(1.6-1)(\dfrac{1}{-4}-\dfrac{1}{8})

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f=-4.44\ cm

Hence, The lenses with different focal length are four.

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