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4 years ago

5

Newton’s Third Law of Motion states that when one object exerts a force on a second object, the forces are __________________.

1 answer:

Bezzdna [24]4 years ago

6 0

Out of the following choices, Newton's Third Law of Motion states that when one objects exerts a force on a second object, the forces are equal in magnitude and opposite in direction.

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In a blood pressure reading of 110/70, 110 represents ________ pressure and 70 represents ________ pressure.

kap26 [50]

Systolic pressure; Doastolic pressure.

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3 years ago

High-altitude mountain climbers do not eat snow, but always melt it first with a stove. To see why, calculate the energy absorbe

Vikki [24]

Answer:

a) $Q=467443.8\ J$

b) $Q_m=299700\ J$

c) $Q_2=131859\ J$

Explanation:

Given:

specific heat of ice, $c_i=2100\ J.kg^{-1}.^{\circ}C^{-1}$

latent heat of fusion of ice, $L=333000\ J.kg^{-1}$

specific heat of water, $c_w=4186\ J.kg^{-1}.^{\circ}C^{-1}$

(a)

mass of snow, $m_s=0.9\ kg$

initial temperature of snow, $T_{is}=-15^{\circ}C$

Final temperature of the consumed mass, $T_f=37^{\circ}C$

<u>Now the energy absorbed from the body after eating this snow:</u>

$Q=m_s.c_i.\Delta T_i+m_s.L+m_s.c_w.\Delta T_w$

$Q=0.9\times 2100\times (0-(-15))+0.9\times 333000+0.9\times 4186\times (37-0)$

$Q=467443.8\ J$

(b)

<u>Energy absorbed from the body in melting the ice is the total latent heat:</u>

$Q_m=m_s.L$

$Q_m=0.9\times 333000$

$Q_m=299700\ J$

(c)

initial temperature of water, $T_{iw}=2^{\circ}C$

final temperature of water, $T_{iw}=37^{\circ}C$

<u>Now, the amount of energy invested by body for the water at this condition:</u>

$Q_2=m_s.c_w.\Delta T_2$

$Q_2=0.9\times 4186\times (37-2)$

$Q_2=131859\ J$

3 0

3 years ago

What is Newton’s 3rd Law of Motion?

sasho [114]

Answer:

His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

Explanation:

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3 years ago

2 cultural practices for cultivation of tomatoes

Brut [27]

Mulching and Staking

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2 years ago

A 2 Ω resistor, an 8 Ω resistor, and a 12 Ω

jok3333 [9.3K]

Answer:R=1,4Ω

Explanation:

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3 years ago