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Fofino [41]
3 years ago
10

Which elements are found in all four components of Earth?​

Physics
1 answer:
kifflom [539]3 years ago
3 0

Answer:

oxygen silicon aluminun iron

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Cerrena [4.2K]
I would help them out and try to comfort and protect them from what was making them feel like that
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4 years ago
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a thundercloud whose base is 500m above the ground. The potential difference between the base of the cloud and the m ground is 2
kolezko [41]

Answer:

1.6×10⁻⁶ N.

Explanation:

From the question,

F = (V/r)q......................... Equation 1

Where F = Electric force on the raindrop, V = Potential difference between the base of the cloud and the ground, r = distance between the base of the cloud and the ground, q = the charge on a rain drop.

Given: V = 200MV = 200×10⁶ V, r = 500 m, q = 4.0×10⁻¹² C.

Substitute these values into equation 1

F = [(200×10⁶ )/500]×4.0×10⁻¹²

F = 1.6×10⁻⁶ N.

3 0
3 years ago
The outside diameter of the playing area of an optical Blu-ray disc is 11.75 cm, and the inside diameter is 4.50 cm. When viewin
erica [24]

Answer:

The minimum angular speed 57.0 rad/s

Explanation:

In this exercise we must use the relationships between the angular and linear magnitudes, for the speeds we have

      v = w r

 

As they give us that linear velocity is constant, we will calculate the angular velocity for the two radii, external and internal

     r1 = 11.75 cm (1 m / 100cm) = 0.1175 m

    w1 = v / r1

    w1 = 6.70 / 0.1175

    w1 = 57.0 rd / s

    R2 = 4.50 cm = 0.0450 m

    w2 = 6.70 / 0.0450

   w2 = 148 rad / s

The minimum angular speed 57.0 rad / s

4 0
3 years ago
Find the magnitude of the emf induced in the rod when it is moving toward the right with a speed 7.50 m/s.
Flauer [41]

Answer:

3 volts

Explanation:

It is given that,

Magnetic field, B = 0.8 T

Length of a conducting rod, l = 50 cm = 0.5 m

Velocity of the conducting rod, v = 7.5 m/s

We need to find the magnitude of the emf induced in the rod when it is moving toward the right. When a rod is moved in a magnetic field, an emf is induced in it and it is given by :

\epsilon=Blv

Putting all the values,

\epsilon=0.8\times 0.5\times 7.5\\\\\epsilon=3\ V

So, the magnitude of the emf induced in the rod is 3 volts.

6 0
4 years ago
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By the help of newtons law of gravitation we can derive keplers third law of planetary motion.
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