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Virty [35]
3 years ago
6

Railroad cars are loosely coupled so that there is a noticeable time delay from the time the first and last car is moved from re

st by the locomotive. Discuss the advisability of this loose coupling and slack between cars from the point of view of impulse and momentum.
Physics
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

Without this slack, a locomotive might simply sit still and spin its wheels. The loose coupling enables a longer time for the entire train to gain momentum, requiring less force of the locomotive wheels against the track. In this way, the overall required impulse is broken into a series of smaller impulses. (This loose coupling can be very important for braking as well).

Explanation:

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Answer:

12 A

Explanation:

V= I * R

V/R = I

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1 year ago
Describe what happens to chemical<br> bonds during a chemical reaction
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Explanation:

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2 years ago
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad/s 1045 rad/s ). If a particular disk is
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Answer:

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Explanation:

Given that,

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5 0
3 years ago
While playing football, Chris runs 4.5 m at 20⁰ south of west. If an opponent was trying to tackle him how far west and south wo
rewona [7]

Answer:

South = 1.5m

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Explanation:

Kindly see attached a rough draft of the situation

Step one

Given data

From the sketch the direction of the player is along the resultant of the triangle, corresponding to the Hypotenuse

Step two:

Hence for an opponent to tackle him towards the south, he must be at

sin θ= opp/hyp

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3 years ago
Which branch of physics deals with the study of force, energy, and motion?
dexar [7]
The correct answer is Mechanics
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3 years ago
Read 2 more answers
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