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pychu [463]
4 years ago
9

It was a children versus grown-ups competition at school. One event required the adult to throw a basketball as far as he could.

When it was the child's turn, he had to throw a baseball instead. The event coordinator said, "It's only fair!" Based on Newton's laws, was this event fair?
Yes, because an adult can apply more force than a child can. Making the adult's object bigger than the child's object helps to even out the acceleration.

No, because a basketball is bigger than a baseball, and objects that are bigger accelerate slower.

Yes, because acceleration doesn't depend on the size of the object.

No, because you must have the same size object in a competition.
Physics
2 answers:
Helga [31]4 years ago
6 0
D. Because If Your Going To Have A Contest Its Going Have To Be The Same Objectives For Both Contenders.

Hope this helps! xx
Pachacha [2.7K]4 years ago
5 0

Answer:

Yes, because acceleration doesn't depend on the size of the object.

Explanation:

We need to explain this a little, because even though acceleration depends on the mass of the object (not the size), size might increase fairness, according to Newton's second law:

<em>"The magnitude of an object's acceleration is proportional to the net force and inversely proportional to the mass of the object."</em>

So, the greater the mass, the smaller the acceleration, but size\neqmass.

The fairness would come from the size of the object being affected by drag on the air, where the surface area would act as a negative force to the direction of the throw, thus the distance of the throw.

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How fast is a wave traveling if it has a wavelength of 7 meters and a frequency of 11 Hz?
pashok25 [27]

Answer:

\huge{ \boxed{ \bold{ \sf{77 \: m/s}}}}

☯ Question :

  • How fast is a wave travelling if it has a wavelength of 7 meters and a frequency of 11 Hz?

☯ \underbrace{ \sf{Required \: Answer  :  }}

☥ Given :

  • Wavelength ( λ ) = 7 meters
  • Frequency ( f ) = 11 Hz

☥ To find :

  • Speed of sound ( v ) = ?

☄ We know ,

\boxed{ \sf{v = f \times λ}}

where ,

  • v = speed of sound
  • f = frequency
  • λ = wavelength

Now, substitute the values and solve for v.

➺ \sf{v = 11 \times 7}

➺ \boxed{ \sf{v = 77 \: m/s}}

-------------------------------------------------------------------

✑ Additional Info :

  • Frequency : The number of complete vibrations made by a particle of a body in one second is called it's frequency. It is denoted by the letter f . The SI unit of frequency is hertz ( Hz ).

  • Wavelength : The distance between two consecutive compressions or rarefactions of a sound wave is called wavelength of that wave. It is denoted by λ ( lambda ) and it's SI unit is m.

  • Speed of a sound wave : The distance covered by a sound wave in one second is called speed of sound wave. It depends on the product of wavelength and frequency of the wave.

Hope I helped!

Have a wonderful time! ツ

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7 0
3 years ago
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