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Gnesinka [82]
3 years ago
8

A guitar string sends out waves that hit your ear. in 2 seconds, 76 wave cycles hit your ear

Physics
1 answer:
Novosadov [1.4K]3 years ago
8 0

Answer:

a

Explanation:

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Earthquakes are caused by movement of the Earth's crust. What causes the Earth's crust to move?
fomenos

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B

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8 0
3 years ago
Read 2 more answers
Point charges of 21.0 μC and 47.0 μC are placed 0.500 m apart. (a) At what point (in m) along the line connecting them is the el
rewona [7]

Answer:

a) x = 0.200 m

b)E = 3.84*10^{-4} N/C

Explanation:

q_1 = 21.0\mu C

q_1 = 47.0\mu C

DISTANCE BETWEEN BOTH POINT CHARGE = 0.5 m

by relation for electric field we have following relation

E = \frac{kq}{x}^2

according to question E = 0

FROM FIGURE

x is the distance from left point charge where electric field is zero

\frac{k21}{x}^2 = \frac{k47}{0.5-x}^2

solving for x we get

\frac{0.5}{x} = 1+ \sqrt{\frac{47}{21}}

x = 0.200 m

b)electric field at half way mean x =0.25

E =\frac{k*21*10^{-6}}{0.25^2} -\frac{k*47*10^{-6}}{0.25^2}

E = 3.84*10^{-4} N/C

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3 years ago
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Give an example of how the apparent motion of an object depends on the observers motion
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In a moving car the outside looks to be moving. however if viewed from the outside, the car appears to be moving. so motion is relative to the person observing.
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