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max2010maxim [7]
3 years ago
11

3. Consider a locomotive and the rest of a freight train to be a single object. Suppose the locomotive is pulling the train up a

hill. Describe the action and reaction forces that cause the locomotive to move up the hill, such as the reaction force and gravity.
This question has been posted before put the answers were not correct.
Physics
1 answer:
Nonamiya [84]3 years ago
6 0

Answer:

Action - Pulling up the train.

Reaction - Friction on the locomotive

Explanation:

Locomotive is pulling the train upwards ,

Which is the action force applied by the locomotive,

As a reaction locomotive will be pulled by the train which is the reaction of pulling

Now, considering it as a action on locomotive , friction force will act on it as a reaction upwards which will result to move it upwards.

For train action is pulling up by locomotive and reaction will be friction acting on it downwards.

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For a specific volume of 0.2 m3/kg, find the quality of steam if the absolute pressure is (a) 40 kPa and (b) 630 kPa. What is th
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Answer:

x=0.0498

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Explanation:

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v_f=1.265*10^{-3}m^3/kg

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(a)

Generally the equation for quality of Steam X  is mathematically given by

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x=\frac{0.2-1.0265*10^{-3}}{3.993-1.0265*10^{-3}}

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(b)

Generally the equation for quality of Steam X  is mathematically given by

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Answer:

41.81^{\circ}

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Let \overrightarrow{AB} is the speed of the kayaker having angle \theta measured north of east as shown in the figure.

For the resultant velocity in the north direction, the tail of the vector \overrightarrow {OA} and head of the vector \overrightarrow{AB} must lie on the north-south line.

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|\overrightarrow{AB}|\sin \theta=|\overrightarrow{OA}|

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\Rightarrow \theta=41.81^{\circ}

Hence, the kayaker must paddle in the direction of 41.81^{\circ}  in the north of east direction.

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