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3 years ago

20 points+ brainiest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2 answers:

5 0

<span>Question 1
Answer: There are both magnetic north and south poles.

</span><span>QUESTION 2
Answer: Electric charges must come in pairs—one positive and one negative.

Question 4
Answer: Aluminium

Question 5
Answer: an iron nail</span>

svlad2 [7]3 years ago

5 0

Answer:

Q1: There are both magnetic north and south poles.

Q2: Magnetic domains must come in pairs—one north and one south.

Q4: Aluminium

Q5: An iron nail

Explanation:

Q1: A magnet always has two poles. So, our earth has also two poles. One pole is north and the other is south.

Q2: Electric charge may be isolated but magnetic domains always have two poles.

Q4: Aluminium is not a magnetic substance, so it cannot be made into a magnet.

Q5: Iron is a magnetic material, so it can be made into magnet.

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Answer:

h = 20 m

Explanation:

given.

height, h = 10 m

Potential energy at 10 m = 50 J

Kinetic energy at 10 m = 50 J

maximum height the ball will reach, H = ?

Total energy of the system

T E = 50 J + 50 J

T E = 100 J

now,

A h = 10 m

P E = m g h

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mg = 5 ..............(1)

at the top most Point the only Potential energy will be acting on the body.

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3 years ago

Consider a glider flying at 400 meters altitude, when suddenly all its static ports become blocked by volcanic ash. The pressure

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Answer:

the airspeed indicated by the pitot-tube driven airspeed indicator is 91.23m/s

Explanation:

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d = fluid density(kg/m³)

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3 years ago

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tan θ = $\frac{sin \ \theta}{cos \ \theta}$ = sin θ

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1.5 10⁻⁵ = 50 λ

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