3 years ago

Which is true about surface waves?

Physics

2 answers:

Sauron [17]3 years ago

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The disturbance does not have a specific motions

asambeis [7]3 years ago

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Answer:

the answer is B

Explanation:

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Explanation:

We are given that

Mass of box=m=11.2 kg

Speed of box=u=3.5m/s

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Final velocity,v=0

a.We have to find the horizontal force applied by worker to maintain the motion.

According to question

Horizontal force=F= $f=\mu_kmg$

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Horizontal force= $F=0.2\times 11.2\times 9.8=21.95 N$

b.According to work-energy theorem

$W=\frac{1}{2}mv^2-\frac{1}{2}mu^2$

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$-\mu mg s=-\frac{1}{2}(11.2)(3.5)^2$

$0.2\times (11.2)\times 9.8\times s=\frac{1}{2}(11.2)(3.5)^2$

$s=\frac{11.2\times (3.5)^2}{2\times 0.2\times 11.2\times 9.8}$

$s=3.125 m$

Hence, the box slide before coming to rest=3.125 m

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C) the wave nature of atoms.

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