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Nookie1986 [14]
3 years ago
5

The magnetic dipole moment of Earth is 8.00 ✕ 1022 J/T. Assume that this is produced by charges flowing in Earth's molten outer

core. If the radius of their circular path is 2350 km, calculate the current they produce.
Physics
1 answer:
Rudiy273 years ago
3 0

Answer:

Therefore,

Current produce is

i=4.61\times 10^{9}\ Ampere

Explanation:

Given:

Magnetic dipole moment of Earth,

\mu=8\times 10^{22}\ J/T

Radius = r = 2350 km = 2.35 × 10⁶ m

To Find:

Current, i =?

Solution:

Magnetic Dipole Moment:

A magnetic moment is a quantity that represents the magnetic strength and orientation of a magnet or any other object that produces a magnetic field.

Magnetic dipole moments have dimensions of current times area.

It is given by,

\mu=i\times Area

Where,

\mu =  Magnetic dipole moments

i = Current

A = area = \pr r^{2}

Substituting the values we get

i=\dfrac{\mu}{\pi r^{2}}=\dfrac{8\times 10^{22}}{3.14\times (2.35\times 10^{6})^{2}}

i=\dfrac{8\times 10^{22}}{17.34\times 10^{12}}=4.61\times 10^{9}\ Ampere

Therefore,

Current produce is

i=4.61\times 10^{9}\ Ampere

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To pull an old stump out of the ground, you and a friend tie two ropes to the stump. You pull on it with a force of 500 N to the
zhannawk [14.2K]

Answer:

C. less than 950 N.

Explanation:

Given that

Force in north direction F₁ = 500 N

Force in the northwest F₂ = 450 N

Lets take resultant force R

The angle between force = θ

θ = 45°

The resultant force R

R=\sqrt{F_1^2+F_2^2+2F_1F_2cos\theta}

R=\sqrt{500^2+450^2+2\times 450\times 500\times cos\theta}

R= 877.89 N

Therefore resultant force is less than 950 N.

C. less than 950 N

Note- When these two force will act in the same direction then the resultant force will be 950 N.

8 0
3 years ago
What is the proper way to start a fire?
Katyanochek1 [597]

Answer:

Explanation:

STEP 1: Gather Your Tools. There's a bit more to building a great campfire than simply placing a few logs in a heap ... If your site has a fire ring, you'll probably have to push the ash and charcoal from ... (Remember, tinder is the really light, quick burning material.) 1. ... Then build a larger teepee of firewood over the kindling.

6 0
3 years ago
A bicycle pump contains 200 cm3 of air and is connected to a bicycle tyre. The volume of the tyre is 800 cm3. The pressure of th
Aleksandr [31]

Answer:

The total volume of the air is 1000 cubic centimeters.

Explanation:

Since the bicycle pump and the bicycle tyre have the same pressure, then the total volume of the air is the sum of the volume of each element, then we translate this into the following artihmetical expression:

V = 200\,cm^{3}+800\,cm^{3}

V = 1000\,cm^{3}

The total volume of the air is 1000 cubic centimeters.

7 0
3 years ago
If an object has a mass of 20 grams and a volume of 40 cm3, what is its density in g/cm3?
alexgriva [62]
20/40=0.5 g/cm^3 becuase, mass/volume=density.
8 0
3 years ago
The blades in a blender rotate at a rate of 6100 rpm. When the motor is turned off during operation, the blades slow to rest in
MissTica

Answer:

<em>155.80rad/s</em>

Explanation:

Using the equation of motion to find the angular acceleration:

\omega_f = \omega_i + \alpha t

\omega_f is the final angular velocity in rad/s

\omega_i  is the initial angular velocity in rad/s

\alpha is the angular acceleration

t is the time taken

Given the following

\omega_f = 6100rpm

Time = 4.1secs

Convert the angular velocity to rad/s

1rpm = 0.10472rad/s

6100rpm = x

x = 6100 * 0.10472

x  = 638.792rad/s

\omega_f = 638.792rad/s\\

Get the angular acceleration:

Recall that:

\omega_f = \omega_i + \alpha t

638.792 = 0 + ∝(4.1)

4.1∝ = 638.792

∝ = 638.792/4.1

∝ = 155.80rad/s

<em>Hence the angular acceleration as the blades slow down is 155.80rad/s</em>

5 0
2 years ago
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