2 years ago

Which best describes a wave?

Physics

2 answers:

mrs_skeptik [129]2 years ago

5 0

Answer:

B. a disturbance that carries energy

Explanation:

A wave is a rhythmic disturbance that carries energy through matter or space.

nekit [7.7K]2 years ago

3 0

Answer:

B. a disturbance that carries energy

Explanation:

A wave can be described as a disturbance that travels through a medium from one location to another location.

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What mass of a material with density rho is required to make a hollow spherical shell having inner radius r1 and outer radius r2

Margarita [4]

Answer:

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

Explanation:

We have to make a hollow sphere of inner radius $r_1$ and outer radius $r_2$ .

Then the mass of the material required to make such a sphere would be calculated as:

Total volume of the spherical shell:

$V_t=\frac{4}{3} \pi.r_2^3$

And the volume of the hollow space in the sphere:

$V_h=\frac{4}{3} \pi.r_1^3$

Therefore the net volume of material required to make the sphere:

$V=V_t-V_h$

$V=\frac{4}{3} \pi(r_2^3-r_1^3)$

Now let the density of the of the material be $\rho$ .

<u>Then the mass of the material used is:</u>

$m=\rho.V$

$m=\rho\times \frac{4}{3} \times \pi \times(r_2^3-r_1^3 )$

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3 years ago

Aristotle was a true scientist. True or false?

leonid [27]

No, because he was a philosopher

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3 years ago

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A machine does 1200 J of work in 1 min. What is the power developed

densk [106]

Answer:

20 watts

Explanation:

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Power=1200J/60sec

Power=20 watts

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2 years ago

Which part of the eye holds eye color?

Anna [14]

Hi, it’s the iris. Hope this helped u

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Letters A B, C and D represent locations on a bar magnet. Which location has the greatest magnetic force? (l) A (3) C ets (2) B

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