3 years ago

A feather will fall through the air more slowly than a brick because of

Physics

1 answer:

Vilka [71]3 years ago

7 0

Air resistance because air resistance causes the feather to fall more slowly

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1.38*10^18 kg

Explanation:

According to the Newton's law of universal gravitation:

$F=G*\frac{m_a*m_p}{r^2}$

where:

G= Gravitational constant (6.674×10−11 N · (m/kg)2)

ma= mass of the astronaut

mp= mass of the planet

$F=m_a.a\\(v_f )^2=(v_o)^2+2.a.\Delta y\\\\a=\frac{(v_f)^2-(v_o)^2}{2.\Delta y}\\\\a=\frac{(0)^2-(4.29m/s)^2}{2.0.64m}=14.38m/s^2\\\\F=m_a*14.38m/s^2$

so:

$m_a*14.38m/s^2=(6.674*10^{-11}N.(m/kg)^2)*\frac{m_a.m_p}{(2.530*10^3m)^2}\\m_p=\frac{14.38m/s^2(2.530*10^3m)^2}{(6.674*10^{-11}N.(m/kg)^2)}\\\\m_p=1.38*10^{18}kg$

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3 years ago

What is the insertion for the brachialis

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Coronoid process of the ulna

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The efficiency of a machine is always less than 100% because part of the energy input is used to

Travka [436]

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C. Overcome Friction

Explanation:

When using any machine usually those with moving parts, you may notice heat forming near the areas where most movement occurs. As friction continues, more energy is used up and released as heat. For that reason, the efficiency of a machine will forever be less than 100%

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What is a example of a real life scientific inquiry problem

Papessa [141]

What is an example of how you can use scientific inquiry to solve a real life problem.

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An object with a mass of 6.0 kg accelerates 8.0 m/s^2 when an unknown force is applied to it. What is the amount of the force? R

iren [92.7K]

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48N

Explanation:

use F=ma, or force is equal to mass multiplied by acceleration.

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3 years ago