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Alisiya [41]
3 years ago
10

A wave has a wavelength of 125 meters is moving at a speed of 20 m/s. What is it frequency? ​

Physics
1 answer:
umka21 [38]3 years ago
3 0

Answer:

0.16 Hz

Explanation:

frequency = speed/wavelength

= 20/125 = 0.16 Hz

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No, newton’s second law does not apply to a situation in which there is no net force.

<h3>What is force?</h3>

A force is a push or pull upon an object which stops or tends to stop the object and move or tends to move an object.

No, newton’s second law apply to a situation in which there is no net force because force compels the object to move in the direction in which force is applied so we can conclude that force is compulsory to move an object.

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A force of 825 N is needed to push a car across a parking lot. Two students push a car 35 m. How much total work is done?
MaRussiya [10]
<h2>Answer :</h2><h2 />

Work is the amount of energy transferred. As per the formula

Work = Force x Distance [moved toward the direction of the force]

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Force = 825 N

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6 0
3 years ago
Two 3 m long conductors are separated from each other by 5 mm and carry a current of 10 A dc. Calculate the force that one condu
makkiz [27]

Answer:

0.012 N

Explanation:

The formula to apply is that adopted from the Ampere law which is;

F= μ* I₁*I₂*l /2πd   where

F is force that one conductor exerts on the other.

μ = magnetic permeability of free space = 4π×10⁻⁷ T. m/A

I₁ = current in conductor one=10 A

I₂ = current in conductor two= 10 A

l= length of conductor= 3 m

d= distance between the conductors = 5 mm = 0.005 m

Applying the values in the equation

F= 4π×10⁻⁷ *10*10*3 / 2π*0.005

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F=0.012 N

7 0
3 years ago
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