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JulsSmile [24]
3 years ago
11

The average person passes out at an acceleration of 7g (that is, seven times the gravitational acceleration on earth). suppose a

car is designed to accelerate at this rate. how much time would be required for the car to accelerate from rest to 62.6 miles per hour? (the car would need rocket boosters!)
Physics
1 answer:
Anvisha [2.4K]3 years ago
3 0
<span>1g=32 ft per second ^2 62.6=330528ft 62.6 miles per hour =330528ft perhour=(330528ft perhour/3600seconds per hour)=91.8ft per second formula for the velocity (v(t))in feet per second at time t in seconds : v(t))=224t+v0,v0=initial velocity = 0ft per seconds v(t))=224t 224t =91.8 t=0.409seconds</span>
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Explanation:

It is given that,

Mass of an electron, m=9.11\times 10^{-31}\ kg

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Final speed of the electron, v=7\times 10^5\ m/s

Distance, d = 5 cm = 0.05 m

(a) The acceleration of the electron is calculated using the third equation of motion as :

a=\dfrac{v^2-u^2}{2d}

a=\dfrac{(7\times 10^5)^2-(3\times 10^5)^2}{2\times 0.05}

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Force exerted on the electron is given by :

F=m\times a

F=9.11\times 10^{-31}\times 4\times 10^{12}

F=3.64\times 10^{-18}\ N

(b) Let W is the weight of the electron. It can be calculated as :

W=mg

W=9.11\times 10^{-31}\times 9.8

W=8.92\times 10^{-30}\ N

Comparison,

\dfrac{F}{W}=\dfrac{3.64\times 10^{-18}}{8.92\times 10^{-30}}

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Answer:

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L = \frac{\mu_{0}N^{2} A }{l}

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Answer:

Stretch can be obtained using the Elastic potential energy formula.

The expression to find the stretch (x) is x=\sqrt{\frac{2\times EPE}{k}}

Explanation:

Given:

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The formula to find EPE is given as:

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Rewriting the above expression in terms of 'x', we get:

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Therefore, the stretch in the spring is 10 m.

So, stretch in the spring can be calculated using the formula for Elastic Potential Energy.

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