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enot [183]
3 years ago
12

A scientist testing to see how a cat “always” lands on their feet drops a cat upside down out of a third story window at a heigh

t of 20 meters.  How long does the cat have to right itself?
Physics
1 answer:
makkiz [27]3 years ago
7 0

<u>Answer: </u>

Cat has 2.02 seconds to right itself.

<u>Explanation: </u>

Initial height of cat from ground = 20 meter.

We have equation of motion , s= ut+\frac{1}{2} at^2, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

In this the velocity of cat in vertical direction = 0 m/s, acceleration = acceleration due to gravity =  9.8 m/s^2, we need to calculate time when s = 20 meter.

Substituting

20=0*t+\frac{1}{2} *9.8*t^2\\ \\ t = 2.02 seconds

So, cat has 2.02 seconds to right itself.

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These nerve cells are needed in muscle and tendons to detect degree of stress and stretching as a sensory activity. A. Ganglia.
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D.Proprioceptors

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"Proprioceptors is Sensory receptors found in muscle an tendons that detect their degree of stretch"

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Two forces are applied to a 17 kg box, as shown. The box is on a smooth surface. Which statement best describes the acceleration
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2 years ago
If one half-life is 60 seconds, how old is the sample after 5 half-lives?
yuradex [85]

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4 0
2 years ago
Read 2 more answers
A transformer consists of 290 primary windings and 824 secondary windings. Part A: If the potential difference across the primar
jasenka [17]

Answer:

Part 1) Voltage in secondary windings is 61.08 Volts

Part 2) Current in secondary windings is 0.53 Amperes

Explanation:

The potential developed in the primary and secondary winding of a transformer are related as

\frac{N_{p}}{N_{s}}=\frac{V_{p}}{V_{s}}

where

Np no of turns in primary coil

Ns no of turns in secondary coil

Vp Voltage of turns in primary coil

Vs Voltage of turns in secondary coil

Applying values in the formula we get

\frac{290}{824}=\frac{21.5}{V_{s}}\\\\\therefore V_{s}=21.5\times \frac{824}{290}=61.08V

Part 2)

Using Ohm's law the current is given by

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