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Lana71 [14]
3 years ago
12

a vibrating source with a frequency of 20.0Hz produces water waves that have a wavelength of 3.0 cm. Calculate the speed of the

waves 
Physics
1 answer:
Shtirlitz [24]3 years ago
7 0

Answer:

60m/s

Explanation:

v=frequency ×wave length

v signifies the speed

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Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons. The resulting charge b
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Answer:

a) 0.167 μC/m^2

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Explanation:

Hello!

First let's find the surface charge density:

a)

Since thesatellite is metallic, the accumalted charge will be uniformly distribuited on its surface. Therefore the charge density σ will be:

σ = Q/A

Where A is the area of the satellite, which is:

A=4πr^2 = πd^2 = π(1.9m)^2

Therefore:

σ = (1.9)/(π (1.9)^2) μC/m^2 = 0.167 μC/m^2

Now let's calculate the electric field

b)

Just outside the surface of the satellite the elctric field will be:

E = σ/ε0

Where      ε0=8.85×10^−12 C/Vm

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E = (0.167*10^-6 C/m^2) / (8.85*10^-12  C/Vm) = 0.01887 *10^6 V/m

E = 1.887 * 10^4 V/m

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How are size and mass of the moon different from that of the earth?
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Answer:

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Lightning strikes the ground

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