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DENIUS [597]
3 years ago
14

A bicyclist is riding at a tangential speed of 13.2 m/s around a circular track. The magnitude of the centripetal force is 377 N

, and the combined mass of the bicycle and rider is 86.5 kg. What is the track's radius?​
Physics
1 answer:
MA_775_DIABLO [31]3 years ago
4 0

Answer:

40m approximately

Explanation:

Given

Force =377N

Mass =86.5kg

Velocity =13.2m/s

Required

Radius of the track

The expression for the centripetal force acting on the cyclist is

F=mv²/r

Make r subject of the formula

r= mv²/F

Substitute

r=86.5*13.2²/377

r= 15,071.76/377

r=39.97

r=40m approximately

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Answer:

Speed:

2.01x10^{8}m/s

Wavelength:

4.24x10^{-7}m

Frequency:

4.74x10^{14}Hz

Explanation:

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n = \frac{c}{v} (1)

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v = \frac{3x10^{8}m/s}{1.490}

v = 2.01x10^{8}m/s

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Since, wavelength is the only one who depends on the media. Therefore the frequency in both medium will be the same.  

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c = \nu \cdot \lambda  (2)

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Before using equation 3 it is necessary to express \lamba in units of meters.

\lambda = 632.8nm . \frac{1m}{1x10^{9}nm} ⇒ 6.328x10^{-7}m

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\nu = 4.74x10^{14}Hz

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Wavelength:

To determine the wavelength it can be used:

v = \nu \cdot \lambda

\lambda = \frac{v}{\nu}

Where v is the speed of the laser through the polystyrene.

\lambda = \frac{2.01x10^{8}m/s}{4.74x10^{14}s^{-1}}

\lambda = 4.24x10^{-7}m

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3 0
3 years ago
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Resultant vector magnitude 4.6 meters/seconds

Inconclusion The  magnitude of their resultant vector is 4.6 meters/seconds

Learn more here:

brainly.com/question/11134601

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