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Rina8888 [55]
3 years ago
10

Why it is not advisable for soldiers to march across the bridge in rythm​

Physics
1 answer:
Musya8 [376]3 years ago
7 0

Answer:

Marching soldiers are cautioned to break stride on a bridge, lest they match the bridge's frequency of vibration. ... A force that's applied to an object at the same frequency as the object's natural frequency will amplify the vibration of the object in an occurrence called mechanical resonance.

Explanation:

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Jobisdone [24]

Answer:

10N

Explanation:

1. Every Action has an equal and opposite reAction.

2. If 10N of force is acted upon an wrench, then the wrench will react with an equal amount of force, but in the opposite direction.

7 0
2 years ago
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a football player kicks a ball with a mass of 0.42kg. The average acceleration of the football was 14.8 m/s2. How much force did
Zarrin [17]

Answer:

6.216 N

Explanation:

As for Newton's second law of motion

F=ma

where F= the acting force

           m=subjected mass

           a= the acceleration

applying F=ma to the football

F=m*a

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6.216 N of a force is supplied to the ball

5 0
2 years ago
A falcon can descend with a speed 250 km/h. If a falcon flies at this speed for 2.0 s and then flies a 100 m in 2.5 s, what is t
Vadim26 [7]

Answer:

v= s/t

Explanation:

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Next 2.5 seconds:

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Average speed:

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3 0
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A monochromatic light beam with a quantum energy value of 3.0 ev is incident upon a photocell. the work function of the photocel
otez555 [7]
1.4 ev I'd explain but I gotta roll!
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What happen when a.c is passed into the coil of dynamo?<br>​
ehidna [41]

Answer:

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