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katovenus [111]
3 years ago
12

Explain how skeletal muscles work in pairs. plzzzz answer asap !!

Physics
1 answer:
Olegator [25]3 years ago
3 0

Answer:

it holds the bone and helps to move

I don't know if this is right

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An 81.5-kg man stands on a horizontal surface.
OLga [1]

Answer:

a)V= 0.0827 m³

b)P=181.11 x 10²  N/m²

Explanation:

Given that

m = 81.5 kg

Density ,ρ = 985 kg/m³

As we know that

Mass = Volume x Density

81.5 = V x 985

V= 0.0827 m³

The force exerted by weight = m g

 F= m g= 81.5 x 10 = 815 N      ( Take ,g= 10 m/s²)

Area ,A= 4.5 x 10⁻² m²

The Pressure P

P=\dfrac{F}{A}

P = \dfrac{815}{4.5\times 10^{-2}}\ N/m^2

P=181.11 x 10²  N/m²

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What is the wavelength of a 10 Hz wave that travels with a speed of 5 m/s?
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B

V= f x lambda
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F = 10hz
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