PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (40pts)

Answer:

120

Explanation:

lambda = 12

f=10

10×12=120

Answer:

B

Explanation:

Distance is 10 because 2+3+5=10

Displacement =0.

Bf?

Answer:to protect an electrical circuit from damage caused by excess current from an overload or short circuit.

Explanation:

Answer:atom one and atom four

Explanation:

You can download answer here

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Answer:

c

Explanation:

The element is Magnesium as it can form s a +2 ionic charge, and has 3 energy levels. Therefore, option A is correct.

The ionic charge can be described as the oxidation state of the chemical species. The cation exhibits a positive charge while the anion exhibits a negative charge. The number of valence electrons in atoms decides the charge carried by their ions.

In the modern periodic table, the chemical elements from the left side are electropositive and usually act as metals.  The metals donate one or more electrons thus they usually carry a positive charge on ions.

In the periodic table, the chemical elements from the right end are electronegative and usually act as non-metals. The non-metals can accept electrons thus they form anions.

The valence shell configuration of magnesium is 3s². Magnesium (Mg) can donate two electrons from its valence shell and carry a +2 ionic charge.

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Answer:

The instrument is thermometer

Answer:  when the full moon moves through Earth’s shadow, which only happens when Earth is between the Moon and the Sun and all three are lined up in the same plane, called the ecliptic  In an eclipse, Earth’s shadow has two distinct parts the umbra and the penumbra. The umbra is the inner, cone-shaped part of the shadow, in which all of the light has been blocked. The penumbra is the outer part of Earth’s shadow where only part of the light is blocked. In the penumbra, the light is dimmed but not totally absent.

Answer:

Ex.

1. When we try cycling when we push the padel cycle starts but if we do not push the padels the cycle will stop on one position........

Answer:

D

Explanation:

the man is pull the box that is the force and the box rubbing against the ground causes friction

Answer:

A. (Most likely, sorry if im wrong.)

Answer:

Decrease

Explanation:

Answer:

Calcium is less reactive than strontium.

hope it helps

Answer:

Helium nuclei will split to form hydrogen and the sun will no longer release energy.

Explanation:

:)

When all the hydrogen in the sun has gone for fusion, helium nuclei will split to form hydrogen and the sun will continue to release energy.

The term nuclear fusion has to do with the combination of two or more nuclei to obtain a larger nuclei with the emission of a tremendous amount of energy.

Hence, when all the hydrogen in the sun has gone for fusion, helium nuclei will split to form hydrogen and the sun will continue to release energy.

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Answer: Solar energy and wind energy both can be used

Explanation: Solar energy as well as wind energy would be the most preferable energy source for this community.

Solar energy is the energy that is directly derived from the sun and can be transformed into electrical energy. For example, the use of solar panels.

Wind energy is obtained by the natural agent known as wind. In the region where the wind is high, the turbines moves very fast, thereby generating electricity. For example, wind mill.

Thus this two energy sources are less costly and have lesser environmental impacts and they are very precise and is currently rising in the faster rate and with innovative technical upgradation.

Answer:

Umm I'm pretty sure is all of the above

Answer:

D. The mass of the magnesium oxide does not add up to the oxygen and magnesium.

Explanation:

The oxygen and magnesium should match the Magnesium Oxide.

Answer:

i agree the answer is (D)The mass of the magnesium oxide does not add up to the oxygen and magnesium

Answer:

hmmdndbdjjdjdhdjejjejdjdhdudududjhdhdhdhd

I hope this helps.......

Answer:

Distance

Explanation:

If i'm wrong then eXcUsE mE :')

There is a basic difference, because mass is the actual amount of material contained in a body and is measuredin kg, gm, etc. Whereas weight is the force exerted by the gravity on that object mg. Note that mass is independent of everything but weight is different on the earth

Mass is the matter in a material, while weight is the measure of how the force of gravity acts upon that mass.

Answer:

the heat of the light.

Explanation:

no matter the light, there's always heat being produced from it. and heat makes liuqid rise

The treatment most likely to use is Superficial External bean Radiation Therapy. Then the correct option is B.

The electromagnetic spectrum consists of the range of all types of EM radiation. Radiation is a packet of energy that travels and spreads out.

It has radio waves, infrared waves, visible light waves, ultraviolet rays, and microwaves.

They possess high energy even to penetrate deep within the material. the electromagnetic spectrum has a longer wavelength and less frequency.

Haley noticed a small spot on her skin that turned out to be skin cancer.

Surgery, radiation, chemotherapy, and hormone therapy can all be used to relieve signs and symptoms.

Medications may relieve symptoms such as pain and shortness of breath. Palliative treatment can be used.

The treatment most likely to use is Superficial External bean Radiation Therapy.

Then the correct option is B.

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Answer:

The distance the bird flew is approximately 2.59 meters

Explanation:

We list out the parameters in the question, and the required measurement as follows;

The mass of the Cuban bee hummingbird, m = 1.7 g = 0.0017 kg

The amount of work the bird does, W = 8.8 × 10⁻⁴ J

The amount of upward force the bird exerts, F = 3.4 × 10⁻⁴ N

Let 'd' represent the distance flown by the bird

(The downward force, [tex]F_g[/tex] = The weight of the bird, W

W = The mass of the bird, m × The acceleration due to gravity, g

The acceleration due to gravity, g ≈ 9.81 × 10 m/s²

∴ [tex]F_g[/tex] ≈ 0.0017 kg × 9.81 m/s² = 0.016677 N > F)

Given that the weight of the bird is larger than 'F', we assume that the force exerted by the bird is the net force, [tex]F_{NET}[/tex] = F

Therefore;

Work done, W = Net Force, [tex]F_{NET}[/tex] × Distance, d

∴ W = [tex]F_{NET}[/tex] × d

d = W/[tex]F_{NET}[/tex] = 8.8 × 10⁻⁴ J/(3.4 × 10⁻⁴ N) = 2.58823529 meters

The distance the bird flew, d ≈ 2.59 m.

Answer:

circuit breakers work in a similar way to fuses, and also protect the circuit from damage if too much current flows but work in a different way. when circuit breakers detect a surge in current in a circuit, they break the circuit by opening a switch. one type of circuit breaker used instead of a fuse and an earth wire is a Residual Current Circuit Breaker (RCCB)

Answer:

hope this helps i think the answer is C

Answer:

it is A) biomass produces a less efficent fuel

Explanation:

the rest are advantages

Answer: left side

Explanation:

Given

Block of wood is pushed to the right

As friction always resist the motion, it must be acting towards the left side to stop the block

Answer:

1. Two materials that can be scratched by an iron nail are zinc and aluminum

2. A substance that can be scratched by an iron nail but not a penny is;

Nickel

Explanation:

The hardness of a material can be defined as its ability to resist being plastically deformed at a location due to mechanical scratching, abrasion or indentation

The Mohs hardness scale provides a ranking of materials in the order of hardness with a material having a higher Mohs hardness number being able to scratch other materials which have a lower Mohs hardness number

1. From the Mohs scale of hardness, iron which has an harness number of 4.5 can scratch zinc which has an harness number of 2.5, and iron can also scratch aluminum which has an hardness number of 2.5 to 3

2. A penny is made from copper plated material and will have an outer layer hardness of copper which has an hardness number of 3 on the Mohs scale

Therefore, a penny cannot scratch a material mode of nickel which has an hardness number of 4, while iron which has an hardness of 4.5 will scratch a nickel material

(1) Zinc and aluminum can be scratched by an iron nail.

(2) Nickel can be scratched by an iron nail but not a penny.

The hardness of a material is defined as its ability to resist deformation due to mechanical scratching, abrasion, or indentation.

According to the Mohs hardness scale, a material having a higher Mohs hardness number is able to scratch other materials which have a lower Mohs hardness number.

From the Mohs scale of hardness, iron has a hardness number of 4.5, zinc has a hardness number of 2.5, and aluminum which has a hardness number between 2.5 to 3. So, iron can scratch both, Zinc and Aluminium.

A penny is made from copper-plated material copper has a hardness number of 3 on the Mohs scale. Whereas Nickel has a hardness number of 4. Therefore, a penny cannot scratch a material made of Nickel.

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Answer:

26.83 N.

Explanation:

If the angle between two vector is 90°, to get the resultant, we use Pythagoras theorem.

a² = b²+c²......................... Equation 1

Where a = R = Resultant, b =  12 N, c = 24 N.

Substitute these values into equation 1

R² = 12²+24²

R² = 144+576

R² = 720

√R² = √720

R = 26.83 N.

Hence, the result of the two force is 26.83 N.