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Genrish500 [490]
3 years ago
6

World class swimmers can swim the 100 meter in about 55 seconds what is their approximate average speed

Physics
2 answers:
Mice21 [21]3 years ago
3 0

About 1.8181 meters per second

goldfiish [28.3K]3 years ago
3 0

Answer:

v = 1.82 m/s

Explanation:

As we know that average speed is defined as the total distance covered in total interval of time.

So here given that

total distance = 100 m

total time = 55 s

so here from above formula

v_{avg} = \frac{d}{t}

v_{avg} = \frac{100}{55}

v_{avg} = 1.82 m/s

so the average speed of the swimmer will be 1.82 m/s

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Answer:

v=32.9m/s

Explanation:

The acceleration needed to mantain a circular motion of radius r and speed v is given by the equation a=v^2/r

This is the centripetal acceleration. The person will feel what is called a centrifugal acceleration, of the same value, because he is not in an inertial frame (thus subject to fictitious forces, product of inertia).

We want to know the speed of his head when it is subject to 12.5 times the value of the acceleration of gravity while moving on a 8.84m radius circle, so we must do:

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2 years ago
What happens to the current supplied by the battery when you add an identical bulb in parallel to the original bulb?
Marysya12 [62]

Answer:

b. The current stays the same.

Explanation:

In the case given current is supplied by the battery to a bulb . Here, we should know that bulb also apply resistance to the flow of current .

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Therefore, both the resistance( bulb) are in parallel.

We know, when two resistance are in parallel , current through them is same and voltage is divided between them.

Therefore, in this case current stays same in the original bulb.

Hence, this is the required solution.

6 0
3 years ago
If you push on the floor with 5 N for 15 seconds, how much work is done?
Maslowich

Answer: It would be 75

Explanation: If your pushing on the floor at a rate of 5 for 15 seconds you would multiply the numbers and get 75

4 0
3 years ago
Read 2 more answers
Option B.
Bezzdna [24]

Answer:

it would be...

Explanation:

7 0
2 years ago
Cross section of a solid circular rod is subject to a torque of t = 2.7 kn⋅m . if the diameter of the rod is d = 8 cm , what is
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Shear Stress= Force along the tangent/ Area
= 2700/π*r^2
=2700/3.14*16
=54
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3 years ago
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