Is this true or false a seismograph records the air movements caused by sseismic waves

Two parallel wires run in a north-south direction. The eastern wire carries 15.0 A northward while the western wire carries 6.0

djyliett [7]

Answer:

The magnitude and direction of the magnetic field is 2.7 x 10⁻⁵ T upwards

Explanation:

Given;

current in the eastern wire, $I_e$ = 15 A

current in the western wire, $I_w$ = 6 A

distance between the wires, d = 30 cm = 0.3 m

The magnetic field at a distance R from a line current I, is given as;

$B = \frac{\mu_o I }{2 \pi R}$

The magnetic field between the wires, are in opposite directions, and since the currents are also in opposite directions, the magnetic fields of the wires will be added.

The total field = magnetic field (east) + magnetic field (west);

$B = \frac{\mu_o I_e}{2 \pi R_e} + \frac{\mu_0 I_w}{2 \pi R_w} \\\\B = \frac{\mu_o}{2\pi} (\frac{I_e}{R_e} + \frac{I_w}{R_w})$

where;

$R_w$ is the distance of the field from west = 10cm = 0.1 m

$R_e$ is the distance of the field on east from west = d - 10cm = 30cm - 10cm = 20cm = 0.2 m

The total magnetic field is;

$B = \frac{\mu_o}{2\pi} (\frac{I_e}{R_e} + \frac{I_w}{R_w})\\\\B = \frac{4\pi *10^{-7}}{2\pi} (\frac{15}{0.2} + \frac{6}{0.1})\\\\B = 2*10^{-7}(75 + 60)\\\\B = 2*10^{-7}(135)\\\\B = 2.7*10^{-5} \ T$

Since total magnetic field is positive, the direction of the field is upwards (positive y direction)

Therefore, the magnitude and direction of the magnetic field is 2.7 x 10⁻⁵ T upwards

3 0

3 years ago

What force to be required to accelerate a car of mass 120 kg from 5 m/s to 25m/s in 2s

Ira Lisetskai [31]

Answer:1200

Explanation:

F=ma =m(Vf-Vi)/t

F=120(25-5)/2 =1200N

4 0

3 years ago

A motor boat is headed at a velocity of 25 kilometers/hour toward the north, while the velocity of the water current is 12 kilom

Tems11 [23]

Explanation:

CON EL TEOREMA DE PITÁGORAS

<em>v</em> = $\sqrt{(12 km/h)^{2} + (25 km/h)^{2}}$ = 27.7 km/h

8 0

4 years ago

The air that flows over the top part of an airplane's wing moves faster than the air that flows across the bottom. This faster m

kaheart [24]

As an airplane moves through the air, its wings cause changes in the speed and pressure of the air moving past them. These changes result in the upward force called lift.

The Bernoulli principle states that an increase in the speed of a fluid occurs simultaneously with a decrease in the pressure exerted by the fluid.

A wing is shaped and tilted so the air moving over it moves faster than the air moving under it. As air speeds up, its pressure goes down. So the faster-moving air above exerts less pressure on the wing than the slower-moving air below. The result is an upward push on the wing—lift!

4 0

3 years ago

If velocity is positive, which woul

shusha [124]

Answer:

C. An inital volocity that is faster than the final volocity

Explanation:

.

5 0

3 years ago