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s2008m [1.1K]
3 years ago
8

A wave travels at a constant speed. How does the wavelength change if the frequency is reduced by a factor of 4?

Physics
1 answer:
Svetlanka [38]3 years ago
5 0

Answer:

The product of (wavelength) x (frequency) is always the same number ... the wave's speed.  

So if the wavelength is somehow reduced to  1/4  its original length, the frequency is immediately multiplied by 4 .  That's the only way their product can remain the same.

Explanation:

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A 62.2-kg person, running horizontally with a velocity of 3.80 m/s, jumps onto a 19.7-kg sled that is initially at rest. (a) Ign
jek_recluse [69]

Answer:

a) v = 2.886\,\frac{m}{s}, b) \mu_{k} = 0.014

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b) The deceleration experimented by the system person-sled is:

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By using the Newton's Laws, the only force acting on the motion of the system is the friction between snow and sled. The kinetic coefficient of friction is:

-\mu_{k}\cdot m\cdot g = m\cdot a

\mu_{k} = -\frac{a}{g}

\mu_{k} = -\frac{\left(-0.139\,\frac{m}{s^{2}} \right)}{9.807\,\frac{m}{s^{2}} }

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8 0
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