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Alla [95]
3 years ago
5

By the 2nd century BCE the ____ democratized astrology A. Greeks B. Egyptians C. Romans

Physics
1 answer:
elena-14-01-66 [18.8K]3 years ago
3 0

Answer:

A

Explanation:

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. A student claims that if lighting strikes a metal flagpole, the force exerted by the Earth’s magnetic field on the current in
Ratling [72]

Answer:

Explanation:

Given that, current generated from lightning range from

10⁴ A < I < 10^5 A

We know that,

The magnetic force is given as

F = iLB

The magnetic field on the earth surface is

B = 10^-5 T

So, let assume the worst case of a 15m flag pole

L = 15m

Then,

F = iLB

F = 10^5 × 10 × 10^-5

F = 15 N

Therefore, 15N is fairly strong so it will come to the material that was use for the material of the flag pole.

Therefore, it is possible that the student is right depending on the material of the flag pole.

7 0
4 years ago
The change in pitch of a train's horn as it passes while you are standing still can be explained by
alexgriva [62]

The change in pitch of a train's horn as it passes while you are
standing still can be described by the Doppler effect, but that
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8 0
3 years ago
Which of the following best describes a longitudinal wave?
Misha Larkins [42]

Answer:

A part not for sureokay

6 0
3 years ago
Should a flat grassland or a hillside have deeper soil? Explain your answer.
Fudgin [204]
A hillside of course my friend
7 0
3 years ago
Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted between S a
zhenek [66]

The correct answer is:

sixteen times


In fact, the distance between charge q and the source S is 1 unit. Instead, the distance between charge p and the source S is 4 units. The magnitude of the electrostatic force is inversely proportional to the square of the distance between the charge and the source:

E \sim \frac{1}{r^2}

where r is the distance. If we take the force between q and S as reference, we have r=1, so that

E_{qS}=\frac{1}{1^2}=1

while the force between p and S is

E_{pS}=\frac{1}{4^2}=\frac{1}{16}

Therefore, we see that the force exerted between q and S is 16 times the force exerted between p and S.

4 0
3 years ago
Read 2 more answers
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