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3 years ago

Which of the following is true about magnetic poles?

2 answers:

5 0

The answer is A. Have you ever heard the saying, opposites attract? That comes from magnetism. Like poles repel each other while opposites attract.

Alex Ar [27]3 years ago

5 0

A. because the like pole of the inner magnet would be attracted to orienting towards the like pole, The solenoid opposites attract. the main difference between a bar magnet and a solenoid is that there isn't the hollow interior of a bar magnet where "like poles attract". i stand corrected.<span> </span>

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When you are traveling in your car at highway speed, the momentum of a bug is suddenly changed as it splatters into your windshi

makvit [3.9K]

Answer:

Answered

Explanation:

By the law of conservation of the momentum The car-bug system moment will remain the same before and after the collision. And since the mass of the car is much higher than the bug, the change in velocity of the car will be negligible as compared to the change in velocity of the bug and hence the change in momentum of the bug will be very large and change in momentum of the car will be negligible.

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4 years ago

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Kobotan [32]

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3 years ago

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Paul [167]

The answer Is kilometers

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3 years ago

1. how can the school and community help you to stay healthy and be aware of your health status?

Molodets [167]

Answer:

1.school and community helps in growth and development of you social health as when u learn how to be compatible with the people around you, you will do better in life

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3 years ago

A submarine can detect an approaching enemy submarine using sonar. If a stationary submerged submarine emits a 100kHz tone and r

prisoha [69]

Answer:

B ) 1.5 m/s

Explanation:

For the apparent frequency reflected by enemy submarine , the Doppler effect formula is

F = F₀ ( V + v) / (V - v)

F anf F₀ are real and apparent frequency , V and v are velocity of sound and velocity of enemy submarine respectively.

ΔF / F₀ = $\frac{2\times v}{V -v}$

Put ΔF = 200; F₀ = 100000 and V = 1482

200 / 100000 = $\frac{2\times v }{1482-v}$

v = 1.5 m s⁻¹ .

8 0

4 years ago