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My name is Ann [436]
3 years ago
14

Two trains leave the station at the same time, one heading east and the other west. the eastbound train travels at 85 miles per

hour. the westbound train travels at 75 miles per hour. how long will it take for the two trains to be 352 miles apart?
Physics
1 answer:
kakasveta [241]3 years ago
3 0
<span>Since the trains area headed in completely opposite directions, the rate at which they gain distance from each other is simply equal to the sum of the magnitudes of their velocities, in this case 85 + 75 = 160 miles per hour. Therefore, the amount of time it will take for them to be 352 miles apart is 352/160 = 2.2 hours, or 2 hours and 12 minutes.</span>
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777dan777 [17]

Answer:

The answer is "2.41 \times 10^3"

Explanation:

Given:  

m_i = 2000 \ kg \\\\v_i= 4.1 \ \frac{m}{s} \\\\v_f = 3.4 \ \frac{m}{s} \\

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\boxed{m_f = 2.41 \times 10^3}

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2 years ago
Sarah wanted to know the velocity of an airplane traveling from Houston to Dallas. After recording the distance (in miles) and t
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Answer:

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Explanation:

<em>"The accuracy of a potentiometer can be increased by decreasing the potential gradient across the potentiometer wire, and this can be achieved by increasing the length"</em>

<em />

<u>The factors that are affecting/limiting the accuracy of the potentiometer are: </u>

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If the jockey of the potentiometer is pressed for a long time, joule heating sets in, so that reversing the terminals of the potentiometer will prevent the resistance due to joule heat from being added to the measured resistance, ultimately preventing unwanted resistance

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