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Mariulka [41]
3 years ago
13

• Usain Bolt can run at 10 m/s. If he runs for about 20 seconds, how far around the race track did he go?

Physics
1 answer:
yanalaym [24]3 years ago
4 0

Answer:

200metters

Explanation:

because in one second hes going 10 metter in 20 second he will go 20×10=200

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Two wires are parallel and one is directly above the other. Each has a length of 50.0 m and a mass per unit length of 0.020 kg/m
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Answer: The time required for the impluse passing through each other is approximately 0.18seconds

Explanation:

Given:

Length,L = 50m

M/L = 0.020kg/m

FA = 5.7×10^2N

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The sum of distance travelled by each pulse must be 50m since each pulse started from opposite ends.

Ca(t) + CB(t) = 50

Where CA and CB are the velocities of the wire A and B

t = 50/ (CA + CB)

But C = Sqrt(FL/M)

Substituting gives:

t = 50/ (Sqrt( FAL/M) + Sqrt(FBL/M))

t = 50/(Sqrt 5.7×10^2/0.02) + (Sqrt(2.5×10^2/0.02))

t = 50 / (168.62 + 111.83)

t = 50/280.15

t = 0.18 seconds

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3 years ago
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A wire lying along a y axis form y=0 to y=0.25 m carries a current of 2.0 mA in the negative direction of the axis. the wire ful
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Answer:

The force is "19 µN".

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If basically means to move quickly
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Answer:

The answer is 1.1A

Explanation:

See the attached file

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samantha a high school teacher wants to spend more time with her children and is looking for a job in her field. what would be a
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She could look for an online job or a job she can work at from home.

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