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Fittoniya [83]
2 years ago
8

In some states, the highway patrol uses planes carrying radar devices to monitor traffic. As the plane flies over traffic, the r

adar device can tell the officers how fast each car is moving at that moment in time. The radar device determines the car's
Physics
2 answers:
amid [387]2 years ago
5 0
Speed/ velocity/ how fast the car is moving!
Hope this assists you!
Annette [7]2 years ago
3 0
<span>The radar device determines the car's "Instantaneous speed"

Hope this helps!</span>
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A mechanic uses a jack to lift up a car. He exerts a force of 11,000 N at a distance of 3m from the axis of rotation. How much t
pshichka [43]

Answer:

<h2>The amount of torque put on the car is 33,000Nm</h2>

Explanation:

Formula for calculating torque is expressed as T = rFsin\theta\\ where;

r is the radius of the  of the arm of the jack = 3m

F is the force exerted = 11000

\theta\\ is the angle of rotation = 90°

On substituting;

T = 3*11000sin90^{o} \\T = 3*11000 (sin90^{o} =1)\\T = 33000Nm

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3 years ago
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It's called a star when it creates its own energy
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anastassius [24]
C. They have different chemical properties.
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There is less oxygen in air at higher altitudes than at sea level. Scientists have shown that people living at sea level have 5
Ivanshal [37]

Answer with Explanation:

"Red Blood Cells" <em>(RBCs)</em> contain <em>Hemoglobin</em> that is responsible for carrying oxygen into the body. When people are exposed to higher altitudes, <u>the number RBCs in the body increases</u>. This is because the body has a hard time taking in oxygen due to <u>low atmospheric pressure</u>. It makes it hard for oxygen to pass through the lung membranes. This is called "hypoxia." Such condition deprives the body from oxygen, thus, it creates more red blood cells in order to compensate the condition.

When it comes to people living at sea level,<em> the oxygen can easily pass through the lung membranes</em> due to <u>higher atmospheric pressure.</u> This doesn't require the body to build new RBCs. Therefore, the numbers of RBCs needed by people to thrive is lower than living at higher altitudes.

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