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2 years ago

In 2-3 complete sentences, explain why the needle on a compass always points in the direction of magnetic north.

2 answers:

8 0

The needle on a compass always points in the direction of magnetic north because of the magnetic poles of earth. the compass is essentially a magnet itself, so the southern pole of the compass is attracted to the northern pole of earth.

Naddika [18.5K]2 years ago

3 0

Answer: The needle on a compass always points in the direction of magnetic north because of the magnetic poles of earth. the compass is essentially a magnet itself, so the southern pole of the compass is attracted to the northern pole of earth.

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At a depth of 10.9 km, the Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest site in any ocean. Yet, in

KATRIN_1 [288]

Answer:

$P = 1081.304\,atm$

Explanation:

The hydrostic pressure is equal to:

$P = P_{atm} + P_{man}$

$P = 1\,atm + \left(\frac{1\,atm}{101,325\,Pa} \right)\cdot \left(1,024\,\frac{kg}{m^{3}} \right)\cdot (9.807\,\frac{m}{s^{2}} )\cdot (10,900\,m)$

$P = 1081.304\,atm$

7 0

2 years ago

Read 2 more answers

Sound waves in air are a series of

GaryK [48]

Sound waves in air are a series of periodic disturbances, periodic condensations and rarefactions, and high- and low-pressure regions. It is all of the above. The answer is letter D.

5 0

2 years ago

Rudik [331]

Answer:

Explanation:

cause logic

8 0

3 years ago

An apple contains 165 Calories. How many actual calories does it contain? How many joules does it contain

jasenka [17]

Answer:

95 calories

Explanation:

A medium-sized apple has only 95 calories but plenty of water and fiber.

8 0

2 years ago

What product is obtained from the aldol condensation of cyclohexanone?

Evgesh-ka [11]

Answer:

First product is FCH-OH chemically known as 2-[2-furyl(hydroxyl)methyl]-Second product is FCH i.e (2E)-2-[2-furyl-methylene]-cyclohexanone

Explanation:

Please see the attached image for complete chemical reaction of aldol condensation of cyclohexanone

Aldol Condensation is a form of electrophilic substitution reaction in which the alpha carbon in enols or enolate anions is substituted by an electrophile to form carbon-carbon bond. Cyclohexanone also known as the first ketone consists of two alpha-carbons and four potential substitutions i.e alpha-hydrogens but none of the hydrogen on the ring is substituted. Ketones such as cyclohexanone are much more acidic than their parent hydrocarbon.

First product is FCH-OH chemically known as 2-[2-furyl(hydroxyl)methyl]-cyclohexanone that further undergoes dehydration resulting into FCH i.e (2E)-2-[2-furyl-methylene]-cyclohexanone

Based on the explanations above, the compound formed is shown in the image.

6 0

2 years ago