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4 years ago

One positive effect of recycling aluminum cans

Physics

1 answer:

GarryVolchara [31]4 years ago

3 0

Your answer should be “1.”

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As the earth rotates, what is the speed of a physics student in Miami, Florida, at latitude 26∘26∘? Ignore the revolution of the

Ugo [173]

Answer:

v = 418.31 m/s

Explanation:

given,

Radius of earth = 6400 Km

latitude at Miami, Florida = 26°

first we have to find the radius of the rotation at that latitude.

radius = 6400 x 1000 x cos 26°

circumference will be equal to = 2 π r

cos θ is used because at equator angle is zero radius is maximum and cos θ is maximum at 0°

calculation of time to

time = 24 hr

t = 24 x 60 x 60 = 86400 s

$speed = \dfrac{distance}{time}$

$v= \dfrac{2\times \pi \times 6400\times 1000\times cos 26^0}{86400}$

v = 418.31 m/s

speed of a physics student in Miami, Florida is equal to v = 418.31 m/s

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3 years ago

What direction does an applied force move an object

monitta

The object will move in the direction of the applied force.

4 0

3 years ago

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An ideal gas, initially at a pressure of 11.2 atm and a temperature of 299 K, is allowed to expand adiabatically until its volum

Tju [1.3M]

Answer:

The pressure is $P_2 = 4.25 \ a.t.m$

Explanation:

From the question we are told that

The initial pressure is $P_1 = 11.2\ a.t.m$

The temperature is $T_1 = 299 \ K$

Let the first volume be $V_1$ Then the final volume will be $2 V_1$

Generally for a diatomic gas

$P_1 V_1 ^r = P_2 V_2 ^r$

Here r is the radius of the molecules which is mathematically represented as

$r = \frac{C_p}{C_v}$

Where $C_p \ and\ C_v$ are the molar specific heat of a gas at constant pressure and the molar specific heat of a gas at constant volume with values

$C_p=7 \ and\ C_v=5$

=> $r = \frac{7}{5}$

=> $11.2*( V_1 ^{\frac{7}{5} } ) = P_2 * (2 V_1 ^{\frac{7}{5} } )$

=> $P_2 = [\frac{1}{2} ]^{\frac{7}{5} } * 11.2$

=> $P_2 = 4.25 \ a.t.m$

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3 years ago

Which organ allows the exchange of oxygen and carbon dioxide?

jok3333 [9.3K]

Answer:

Respiratory System

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3 years ago

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A scientist who studies fossils of ancient life forms .O ornithologist O Paleontologist O Ichthyologist O Marine Biologist .

Kamila [148]

Answer:

paleontologist

Explanation:

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3 years ago