Please help! I’ll mark brainliest for best answer!

Answer:

c

Explanation:

its c

Earth contains a spinning electric filed. The spinning of earth core creates its magnetic field. Thus, option D is correct.

A body which rotates in its own axis is called a spinning body. Earth rotates about its along with revolving around sun.  The outer core of earth generates electric current. This is called telluric current.

Flow of this current creates an electric current which is parallels to the surface of earth. The direction of magnetic field lines will be perpendicular to the direction of current. But it comes stronger when parallel to current.

A rotating electric current results in the generation of a magnetic field. Thus spinning of  earth core generates a magnetic field and therefore, option D is correct.

To learn more about magnetic field, refer the link below:

https://brainly.com/question/11514007

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Answer:

C ! :)

Explanation:

Answer:

The correct answer is A

Explanation:

LOW-DENSITY PARRTICLE

Explanation:

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Answer:

7m/s

Explanation:

Is the acceleration of the helicopter

Answer:

D. Ionic

Explanation:

It has ionic bonding! Good luck ^^

Answer:

conundrum

Explanation:

its not bias or impass

Answer:

oil, ores, and fossils.

Answer:

answer - a

Explanation:

please like and follow me

Answer:

The answer is A

Explanation:

I'm not 100% sure but, its probably A.

I hate virtual school

Answer:

15 atoms

increases

Explanation:

10 hydrogen atoms + 5 oxygen atoms = 15 atoms

Answer:

0.0625

Explanation:

Answer:

62,500

Explanation:

Answer:

NaOH(aq)

Explanation:

NaOH(aq) is known to precipitate Mn^2+ ions according to the following reaction; Mn^2+(aq)+2OH^−(aq)↽−−⇀Mn(OH)2(s)

Hence, manganese(II) oxide reacts more readily with NaOH(aq) under ordinary conditions precipitating the metal hydroxide solid. This is one of the characteristic reactions of Mn^2+.

The average atomic mass of a sample closer to the mass of Li-6

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.  

So Isotopes are elements that have the same Atomic Number (Proton)  

Atomic mass is the average atomic mass of all its isotopes  

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu  

Mass atom X = mass isotope 1 . % + mass isotope 2.%  

three Li-6, mass number = 6

two Li-7, mass number = 7

total abundance = 5

abundance for Li-6 =

[tex]\tt \dfrac{3}{5}\times 100\5=60\%[/tex]

abundance for Li-7 =

[tex]\tt \dfrac{2}{5}\times 100\5=40\%[/tex]

Average atomic mass :

[tex]\tt (0.6\times 6)+(0.4\times 7)=6.4[/tex]

Answer:

1. Trace fossil. 2. Petrification 3. Freezing 4. Mold

Explanation:

Answer: The same effect happens when you put two electrons near each other (or two protons). We know that if you have a single positively charged particle, a positively .

Explanation: i hope that helped. have a good day.

Answer:

The reaction for which ΔH is positive are endothermic reactions. Explanation: The energy changes occur during the bonds formation and bonds breaking

Answer: 4.90

Explanation: The molal freezing point constant of C6H6 is 4.90 and its melting point is 5.51∘C. A solution of 0.816 g of a compound A dissolved in 7.5 g of benzene freezes at 1.59∘C. Calculate molecular weight of compound A

Answer:

4.90

Explanation:

The molal freezing point of C6H6 is 4.90

The polyatomic ions are those ions which has more than two atoms involved such as the other options than OH^-1 in the question. The OH^-1 ion is the diatomic ion because it has only 2 atoms

Answer:

True

Explanation:

Answer:

True

Explanation:

Most people stick to what they know and don't look for a laughing place.

Answer:

24 sultur with 48hydrogen+16 hydrogen,nitrogen and 48 oxygen+16 nitrogen,16 oxygen+62hydrogen and 32 oxygen

Explanation:

Answer:

I searched the answer up on Brainly so its not my credit.

Explanation:

The answers D.

"If you have learned that metal + nonmetal ⟶ ionic bond, the answer is D, because N and C are the only pair of nonmetals.

However, if you have learned that a bond is ionic if the electronegativity difference (ΔEN) between the two atoms is greater than 0.7, the answer is A, B, and D.

The Li-Cl bond is definitely ionic.

For Na and C, ΔEN =1.62, so the Na-C bond is a highly polar covalent bond.

For Mg and C, ΔEN = 1.24, so the Mg-C bond is a polar covalent."

Hope this helps :D

Answer:

false

Explanation:

as the particles move further apart their forces of attraction become qeak

Answer:

36V

Explanation:

Given parameters:

Number of turns in primary coil  = 150turns

Secondary coil turn = 50turns.

Input voltage  = 12V

Unknown:

Output voltage  = ?

Solution:

For this transformer problem, we use the expression;

   [tex]\frac{N_{s} }{N_{p} }[/tex]   = [tex]\frac{V_{s} }{V_{p} }[/tex]  

Insert the parameters and solve;

        Ns is the number of secondary turns

        Np is the number of primary turns

         Vs is the secondary voltage

          Vp is the secondary voltage

Insert the parameters and solve;

          [tex]\frac{150}{50}[/tex]   = Output voltage / 12

          Output voltage = 12 x 3  = 36V

Answer:

The epicenter

Answer:

cater pillars piutyiry 6 throid gland

Answer:

1. how does sweat get to the sweat glands

Sweat gets to the sweat glands by passing through ducts

2. what hormone helps us react to danger

Adrenaline

#. how many glands are part of the endocrine system?

8

4. What gland is located in the middle of the forehead and regulates the growth of bones?

The pituitary gland.

Explanation:

Answer:

this is hard

Explanation: