3 years ago

29 Family planning is a practice of regulating the number or spacing of offspring through the use of birth control.

Physics

1 answer:

Mandarinka [93]3 years ago

8 0

I am pretty sure the answer is C) fertility awareness

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Answer:

0.0035 mg

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3 years ago

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3 years ago

Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south at a speed of 3.3

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3 years ago

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2 years ago

The Achilles tendon connects the muscles in your calf to the back of your foot. When you are sprinting, your Achilles tendon alt

zepelin [54]

Answer:

a)5mm

b)3.3%

Explanation:

first note down the what's given

$Y_{tendon} = 0.15x10^{10} N/m^{2}$

Area= $A= 1.1x10^{-4} m^{2}$

Mass of the runner= $m_{r}$ =70kg

Fmax= 8 F (since tendon can stretch 8 times of runner's weight)

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L=15cm=> 0.15m

a) $We know that, Y={Fmax.L}$ /AΔL

YAΔL=Fmax. L

ΔL= $\frac{Fmax L}{YA} =\frac{5488*0.15}{0.15x10^{10}x1.1x10^{-4} }$

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b) L=15cm= 150mm

Fractional change can be determined by,

(ΔL/L) *100

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3 years ago

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