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3 years ago

1 point

Physics

2 answers:

Sphinxa [80]3 years ago

7 0

Answer:

the answer is doppler effect

Explanation:

the doppler effect is the change in frequency of a wave in realation to an observer who is moving relative to the wave source. it is named after the austrian physicist christan doppler,who described the phenomenon in 1842. :) happy to help

Anna11 [10]3 years ago

5 0

Answer:

doppler effect

Explanation:

took the quiz

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ivanzaharov [21]

Answer:

U = - G m M / r

Explanation:

The gravitational potential energy is given by the expression

U = - G m₁ m₂ / r

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subtype the given values

U = - G m M / r

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4 years ago

Two long, straight wires both carry current to the right, are parallel, and are 25 cm apart. Wire one carries a current of 2.0 A

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Answer:

x = 7.14 meters

Explanation:

It is given that,

Current in wire 1, $I_1=2\ A$

Current in wire 2, $I_2=5\ A$

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Let at P point the net magnetic field equal to 0. The magnetic field at a point midway between the is given by :

$B=\dfrac{\mu_oI}{2\pi r}$

Let the distance is x from wire 1. So,

$\dfrac{I_1}{r}=\dfrac{I_2}{(0.25-r)}$

$\dfrac{2}{r}=\dfrac{5}{(25-r)}$

$x=\dfrac{50}{7}\ m$

x = 7.14 meters

So, the magnetic field will be 0 at a distance of 7.14 meters from wire 1. Hence, this is the required solution.

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3 years ago

HELP ASAP!!!! Which of the following is an example of a hypothesis? A) What will happen if a sugar cube in boiling water? B) I t

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Answer:

C) If an ice cube is placed into a boiling water, then it will melt in less than 2 minutes.

Explanation:

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3 years ago

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3 years ago

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A stone tumbles into a mine shaft strikes bottom after falling for 4.2 seconds. How deep is the mine shaft

ziro4ka [17]

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=> d = 1/2 * a * t2

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on solving we get

d = 86.436 metres

Note ; Here Gravitational Acceleration is take as , g = 9.8 m/s2

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3 years ago