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4 years ago

A surfer is actually traveling on which part of a surface wave

Physics

2 answers:

77julia77 [94]4 years ago

8 0

A surfer travels on the crest of a surface wave

elixir [45]4 years ago

3 0

Answer:

Surfer travels at the crest

Explanation:

Waves on the surface of water is known as surface waves in which the disturbance will travel in form of crest and trough.

Now we know that disturbance or energy will travel along the surface due to which the crest and trough will also move along the surface with same speed

Now here surfer travel at the position of the crest of the wave because at that position the surfer will remain at the top of the wave due to which his balancing while he is in motion will be easier.

So here we can say the surfer will remain static with respect to the crest of the wave and crest move with the speed of wave and hence A surfer is actually traveling on CREST of a surface wave

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Is boiling a pot of water an example of Thermodynamics?

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Answer: I think I have the answer to your problem!!

A pot of boiling water is a nice everyday example to explain internal energy, heat, and work. However, it's not a good choice for applying the first law of thermodynamics, because the boiling pot isn't a closed system.

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3 years ago

Waves cause erosion through the processes of ______ and abrasion.

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3 years ago

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3 years ago

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By what factor is the intensity of sound at a rock concert louder than that of a whisper when the two intensity levels are 120 d

77julia77 [94]

Answer:

The intensity of sound at rock concert is 10¹⁰ greater than that of a whisper.

Explanation:

The intensity of sound is given by;

$I(dB) = 10Log(\frac{I}{I_o} )$

where;

I is the intensity of the sound

I₀ is the threshold of sound intensity = 1 x 10⁻¹² W/m²

The intensity of sound at a rock concert

$120 = 10Log(\frac{I}{1*10^{-12}} )\\\\12 = Log(\frac{I}{1*10^{-12}} )\\\\\frac{I}{1*10^{-12}} = 10^{12}\\\\I = 1*10^{-12} *10^{12}\\\\I = 1*10^0\\\\I =1 \ W/m^2$

The intensity of sound of a whisper

$20 = 10Log(\frac{I}{1*10^{-12}} )\\\\2 = Log(\frac{I}{1*10^{-12}} )\\\\\frac{I}{1*10^{-12}} = 10^{2}\\\\I = 1*10^{-12} *10^{2}\\\\I = 1*10^{-10}\\\\I =10^{-10} \ W/m^2$

Thus, the intensity of sound at rock concert is 10¹⁰ greater than that of a whisper.

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3 years ago

Suppose a bulldozer is being hauled at 50 km/h to a construction site on the back of a flatbed truck. From which reference point

Alinara [238K]

Answer:

from someone watching the bulldozer from the cab of the truck or from elsewhere on the flatbed.

Explanation:

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3 years ago