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Rom4ik [11]
3 years ago
9

un astronauta cuya masa es 80kg permanece inmovil en el espacio exterior, al activar la unidad propulsora que lleva en la espald

a, esta expulsa 2kg de gas a una rapidez de 15m/s. determina el valor de la velocidad de retroceso del astronauta
Physics
1 answer:
beks73 [17]3 years ago
5 0

Answer:

Explanation:

80(0) = 2(15) + (80-2)v

v = - 0.38 m/s

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A centrifuge is a device used to separate materials by their masses. A sample in a centrifuge is rotated at high speeds along a
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Answer:

 F = 1.047 10⁻² N

Explanation:

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             w = w₀ + α t

as for rest w₀ = 0

             w = α t

             α = w / t

let's reduce the magnitudes to the SI system

              w = 1000 rev / min (2π rad/ 1 rev) (1 min/ 60s) = 104.72 rad / s

              m = 1.00 g (1 kg / 1000 g) = 1,000 10⁻³ kg

              r = 10.0 cm (1 m / 100 cm) = 0.100 m

let's calculate

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              α = 104.72 rad / s²

angular and linear variables are related

               a = α  r

               a = 104.72 0.100

               a = 10.47 m / s²

finally we substitute in Newton's second law

               F = 1 10⁻³ 10.47

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Answer:

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Explanation:

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