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Galina-37 [17]
3 years ago
9

A zebra runs across a field at a constant speed of 14m/s how far does the zebra go in 8 seconds?

Physics
2 answers:
Ratling [72]3 years ago
3 0

Answer:

112m/s

Explanation:

14x8=112 therefore meaning the zebra would run 112m/s

RoseWind [281]3 years ago
3 0

A zebra runs across a field at a constant speed of 14 m/s. The zebra would run 112 m in 8 seconds.

<u>Explanation: </u>

According to Kinematics, the distance travelled is given by the product of speed and time. Here, the speed given as 14 m/s, and time is 8 seconds. Now, the equation is as follows,

                     \text {velocity} = \frac{\text {distance}(s)}{\text {time}(t)}

The required term to find as per the question is distance, so rearranging the above equation, we get,

                     s = v e l o c i t y \times t

By substituting the given values, we get, how much distance the zebra can run in time period of 8 seconds as,

                     Distance, s = 14 \times 8 = 112 m

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Discuss Joule-Thompson effect with relevant examples and formulae.
Delicious77 [7]

Answer:

\mu _j=\dfrac{1}{C_p}\left [T\left(\frac{\partial v}{\partial T}\right)_p-v\right]dp

Explanation:

Joule -Thompson effect

 Throttling phenomenon is called Joule -Thompson effect.We know that throttling is a process in which pressure energy will convert in to thermal energy.

Generally in throttling exit pressure is low as compare to inlet pressure but exit temperature maybe more or less or maybe remains constant depending upon flow or fluid flow through passes.

Now lets take Steady flow process  

Let

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We know that Joule -Thompson coefficient given as

\mu _j=\left(\frac{\partial T}{\partial p}\right)_h

Now from T-ds equation

dh=Tds=vdp

So

Tds=C_pdt-\left [T\left(\frac{\partial v}{\partial T}\right)_p\right]dp

⇒dh=C_pdt-\left [T\left(\frac{\partial v}{\partial T}\right)_p-v\right]dp

So Joule -Thompson coefficient

\mu _j=\dfrac{1}{C_p}\left [T\left(\frac{\partial v}{\partial T}\right)_p-v\right]dp

This is Joule -Thompson coefficient for all gas (real or ideal gas)

We know that for Ideal gas Pv=mRT

\dfrac{\partial v}{\partial T}=\dfrac{v}{T}

So by putting the values in

\mu _j=\dfrac{1}{C_p}\left [T\left(\frac{\partial v}{\partial T}\right)_p-v\right]dp

\mu _j=0 For ideal gas.

6 0
3 years ago
How long would it take you to travel 163 meters at a speed of 33 meters per second?
Leviafan [203]

Speed=

33m {s}^{ -1}

Distance=

163m

speed= distance/time

So,

<u>Time</u><u>=</u><u> </u><u>distance</u><u>/</u><u>speed</u>

Time= 163/33

<h2>=</h2>

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3 years ago
The main purpose of the turbine in a turbojet engine is to
Nuetrik [128]

Answer:

The main purpose of the turbine in the turbojet engine is to Drive the compressor.

Explanation:

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3 years ago
What do a prism, a magnifying glass, a microscope, and eyeglasses ALL have in common? A) They are opaque. B) They refract light.
Elena L [17]
By definition, when the speed of the light changes when it passes from a material to another, this is called "Refraction of light". This happens when there is a difference in the index of refraction between both mediums o materials. Therefore, that speed depends of <span>the medium through  it passes. 
</span> 
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3 years ago
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Determine the number of ways the faces of a regular tetrahedron can be colored with three colors
GREYUIT [131]
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Since the sides can still have the same colors, we deduct this value by 3 in order to eliminate the uniform colors of the four sides.
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Also, we can eliminate the concern on only two colors can mix,
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                      78 - 6 = 72

Hence, the answer is 72. 
5 0
3 years ago
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