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Zinaida [17]
4 years ago
9

Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their amplitude is barely noticable,

but upon reaching shore, they can rise up to the astonishing height of a six-story building. One tsunami, generated off the Aleutian islands in Alaska, had a wavelength of 612 km and traveled a distance of 3920 km in 4.09 h. (a) What was the speed (in m/s) of the wave
Physics
1 answer:
Soloha48 [4]4 years ago
7 0

Answer:

V = 266.23 m/s

Explanation:

The speed of the wave can easily be given by the following formula:

V = S/t

where,

V = Speed of the Wave = ?

S = Distance Covered by Wave = 3920 km

S = Distance Covered by Wave = (3920 km)(1000 m/1 km)

S = Distance Covered by Wave = 3.92 x 10⁶ m

t = Time taken by the wave to cover the distance = 4.09 h

t = Time taken by the wave to cover the distance = (4.09 h)(3600 s/1 h)

t = Time taken by the wave to cover the distance = 14724 s

Therefore,

V = (3.92 x 10⁶ m)/(14724 s)

<u>V = 266.23 m/s</u>

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For a particular scientific experiment, it is important to be completely isolated from any magnetic field, including the earth's
Ivanshal [37]

Answer:

The magnetic field at the center of the coil is   B  =53 \mu T

Explanation:

   From the question we are told that

         The magnetic field of earth is B_e =  50 \mu T  = 50 *0^{-6} \ T

         The diameter of the wire is  d =  1.0\ m

        The radius is r =  \frac{1}{2}  =  0.5  \  m

         The number of turn is  N = 200 \  turns

         The current it is carrying is  I  =  0.211 \  A

The earth magnetic field strength at the center of the coil is mathematically represented as

           B  = N    \frac{\mu_o * I }{2 * r}

Where \mu_o is the permeability of free space

           \mu_o   =   4\pi *   10^{-7} N/A^2

So  

         B  = 200*     \frac{ 4\pi * 10^{-7} * 0.211 }{2 * 0.5}

       B  = 5.304*10^{-5}

        B  =53 \mu T

3 0
3 years ago
new york, Vermont, Massachusetts are specifically what region of the united states? and what two wind directions do you combine?
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Answer:

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3 years ago
A simple series circuit consists of a 150 Ω resistor, a 29 V battery, a switch, and a 2.1 pF parallel-plate capacitor (initially
Rufina [12.5K]
Find the electric flux and the disp at t=0.50ns 
<span>Given: </span>
<span>Resistor R = 160 Ω </span>
<span>Voltage ε = 22.0 V </span>
<span>Capacitor C = 3.10 pF = 3.10 * 10^-12 F </span>
<span>time t = 0.5 ns = 0.5 * 10^-9 s </span>
<span>ε0 = 8.85 * 10^-12 </span>
<span>Solution: </span>
<span>ELECTRIC FLUX: </span>
<span>Φ = Q/ε0 </span>
<span>we have ε0, we need to find Q the charge </span>
<span>STEP 1: FIND Q </span>
<span>Q = C ε ( 1 - e^(-t/RC) ) </span>
<span>Q = { 3.10 * 10^-12 } { 22.0 } { 1 - e^(- 0.5 * 10^-9 / 160 *3.10 * 10^-12 ) } </span>
<span>Q = { 3.10 * 10^-12 } { 22.0 } { 1 - 0.365 } </span>
<span>Q = { 3.10 * 10^-12 } { 22.0 } { 0.635 } </span>
<span>Q = 43.31 * 10^-12 C </span>
<span>STEP 2: WE HAVE Q AND ε0 > >>> SOLVE FOR ELECTRIC FLUX >>> </span>
<span>Φ = Q/ε0 </span>
<span>Φ = { 43.31 * 10^-12 C } / { ε0 = 8.85 * 10^-12 } </span>
<span>Φ = 4.8937 = 4.9 V.m </span>
<span>DISPLACEMENT CURRENT </span>
<span>we use the following equation: </span>
<span>I = { ε / R } { e^(-t/RC) } </span>
<span>I = { 22 / 160 } { e^(- 0.5 * 10^-9 / 160 *3.10 * 10^-12 ) } </span>
<span>I = { 0.1375 } { 0.365 } </span>
<span>I = 0.0502 A = 0.05 A </span>
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Explanation:

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