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3 years ago

12

Air pollutants often cause irritation in the _____ system.

1 answer:

erastova [34]3 years ago

7 0

Respiratory system.

Oversimplified Explanation: they enter the lungs, which is part of the respiratory system.

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In your own words, explain what non-contact forces are.

katrin [286]

It’s a force which acts on an object without coming physically in contract with it.

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2 years ago

The train traveled 500 kilometers north to Odessa in 2 hours . What’s the train’s speed ? What is the velocity ?

ElenaW [278]

Explanation:

Speed is distance over time.

500 km / 2 hr = 250 km/hr

Velocity is speed and direction.

250 km/hr north

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3 years ago

The exact speed of an object in a specific instant is?

GarryVolchara [31]

Im not so sure but it should be the
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3 years ago

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En una competencia automovilística, Germán tarda 38 s en dar una vuelta a la

attashe74 [19]

Explanation:

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2 years ago

Suppose the coefficient of static friction between a quarter and the back wall of a rocket car is 0.330. At what minimum rate wo

Helga [31]

Answer: $3.23 m/s^2$

Explanation:

Given

$\mu_s =0.330$

Frictional Force is balanced by force due to car acceleration

Frictional force $F_s$

$F_s=ma_{min}$

$\mu_sN=ma_{min}$

$\mu_s\cdot mg=ma_{min}$

$a_{min}=\mu_s \cdot g=0.330\times 9.8=3.23 m/s^2$

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2 years ago