please i need detailed explanation​

Answer:

They are the same element.

Explanation:

Atom >>>>> Proton >>>> Neutron

A >>>>>>>> 8 >>>>>>>>> 10

B >>>>>>>> 8 >>>>>>>>> 12

From the table above we can see that both atoms have the same proton number.

Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.

Answer:

In physics, special relativity (also known as the special theory of relativity) is the generally accepted and experimentally confirmed physical theory regarding the relationship between space and time.

We need special relativity in order to solve for quantum gravity. ... The earth was expanding (thus, it's mass was expanding) through space in all directions in order to create gravity **OOPS** forgot, specifically at an accelerating rate… OR… The space must be pushing toward or down on the earth, from every direction.

Answer:

The theory of special relativity explains how space and time are linked for objects that are moving at a consistent speed in a straight line. ... The theory of special relativity was developed by Albert Einstein in 1905, and it forms part of the basis of modern physics.

Explanation:

The second one is best.  Gravity is an attractive force that acts between all objects, whether they're in contact or not.

Gravity is an attractive force that acts between all objects, whether they're in contact or not.

Gravity, also called gravitation, in mechanics, is the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter.

On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos.

On Earth, all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface, the acceleration of gravity is about 9.8 metres (32 feet) per second per second.

Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second. At the surface of the Moon, the acceleration of a freely falling body is about 1.6 metres per second per second.

Hence Gravity is an attractive force that acts between all objects, whether they're in contact or not.

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Explanation:

No.  Centripetal force is a not a force itself, but rather a sum of forces.  From Newton's second law:

∑F = ma

∑F = m v²/r

So centripetal force does not get used on a free body diagram.

Answer:

A 35

B 2

C 8

D 18

E 2

Explanation:

The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.

The arrangement of electrons within the orbitals of an atom is known as its electronic configuration.

Here,

The atomic number, which is equal to the number of protons in every neutral atom, is made up of a constant number of electrons in each neutral atom.

The atomic number of an atom is represented by the letter Z.

The mass number of an atom is the sum of the number of protons and neutrons, which are together known as the nucleons, within the nucleus. It is represented by the letter A.

The atomic number of Zinc is given,

Z = 30

From the figure, the electronic configuration can be represented as,

A = 30

which is the total number of electrons in Zn atom.

B = 2

which is the innermost orbital.

C = 8

D = 18

E = 2

Hence,

The number of electrons in the positions of the Zn atom, A, B, C, D and E are 30, 2, 8, 18 and 2 respectively.

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Answer:

Explanation:  

How does a force do negative work on an object ; This is when the direction of motion is opposite to the direction of the force

To solve this we must be knowing each and every concept related to work. Therefore, a force do negative work on an object,  when the direction of motion is opposite to the direction of the force.

A task requiring mentally or physically effort in order to accomplish a goal or outcome is referred to as labor in general. When we lift heavy objects off the ground or push or pull large objects, we are performing labor. When the direction of motion is opposite to the direction of the force, work is negative.

Another word we frequently use is energy. Energy and amount of work performed are typically associated, because a person who's really feeling particularly excited is capable of accomplishing a lot of work.

Therefore, a force do negative work on an object,  when the direction of motion is opposite to the direction of the force.

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Answer: There is only one Sun in the galaxy … that is the thing that rises in the morning and sets at night. However, there is a use of “sun” to signify any old star … nobody knows exactly there might be trillions out there

Explanation:

Answer:

(a) The density of the object is 316/343 × the density of the oil

(b) The fraction of oil displaced after immersing the object is 0.461 of the oil volume

Explanation:

(a) The volume, V of a cone of height, h and base diameter, D = 2×r is given by the following equation;

[tex]V = \dfrac{\pi r^{2} h}{3}[/tex]

The volume of the object is therefore;

[tex]\dfrac{\pi \times 4^{2} \times 14}{3} = 74\tfrac{2}{3}\pi \, cm^3[/tex]

Where 6 cm is above the oil level we have;

[tex]\dfrac{\pi \times \left (6 \times \dfrac{4}{14} \right )^{2} \times 6}{3} = 5\tfrac{43}{49}\pi \, cm^3[/tex] above the oil level

Therefore, volume of the oil displaced = [tex]68\tfrac{116}{147}\pi[/tex] cm³ = 216.11 cm³

The density of the object is thus;

[tex]\dfrac{68\tfrac{116}{147}\pi}{ 74\tfrac{2}{3}\pi} \times Density \ of \ the \ oil = \dfrac{316}{343} \right ) \times Density \ of \ the \ oil[/tex]

The density of the object = 316/343 × the density of the oil.

(b) The volume of the oil = 2 × Volume of the object = [tex]2 \times 74\tfrac{2}{3}\pi \, cm^3 = 149\tfrac{1}{3}\pi \, cm^3[/tex]

The fraction of the volume displaced, x, after immersing the object is given as follows;

[tex]x = \dfrac{68\tfrac{116}{147}\pi}{ 149\tfrac{1}{3}\pi} = \dfrac{158}{343} = 0.461[/tex]

The fraction of oil displaced after immersing the object = 0.461 of the volume of the oil

Answer:a sound wave in a certain material is 18.0 cm. The

frequency of the wave is 1900 Hz. What is the speed of

Explanation:

Answer:

this situation would not be physically possible

Answer:

A on Edge 5.16 x 10^15 N

Explanation:

The gravitational force between Mars and Phobos is 5.16*10^15 N.

Using the formula

F = G m1 m2/ r^2

  = 6.67*10^-11*6.42*10^23*1.06*10^16/(9378)^2

  = 45.39*10^28/87946884

  = 5.16 * 10^15 N

"The force of attraction on a body by earth is called gravitational force." Example : The leaves and fruits fall from a tree downwards towards the ground, water in a river flows down streams, a ball thrown up goes to a height and then returns back on ground are some examples of motion due to gravitational force.

"Phobos is the larger of Mars' two moons and is 17 x 14 x 11 miles (27 by 22 by 18 kilometers) in diameter. It orbits Mars three times a day, and is so close to the planet's surface that in some locations on Mars it cannot always be seen."

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Answer:

A) 20J

Explanation:

Work = Force x Distance

Force = 50N

Distance = 0.4M

Work = 50 x 0.4 = 20J

Answer:

When an object is in motion, there is energy associated with that object. Why should that be the case? Moving objects are capable of causing a change, or, put differently, of doing work. For example, think of a wrecking ball. Even a slow-moving wrecking ball can do a lot of damage to another object, such as an empty house. However, a wrecking ball that is not moving does not do any work

(hope it helps :p    )

Answer:

The movement of the large box shows more work because the box moved a longer distance.

Explanation:

The correct statement to describe that when a 100 J of heat energy is added to the system, then the kinetic energy of the system will increase  and the speed of the particles will also increase. Hence, option 3 is correct.

The force that an object has because it is moving is known as kinetic energy in physics. It is defined as the quantity of effort required to accelerate anybody of a specific mass from rest to its specified velocity. The body keeps its kinetic energy after acquiring it during acceleration, barring changes in speed.

When slowing from its current pace to a condition of rest, the body expends the very same amount of energy. Any term in the Lagrangian of a system that has a derivative in regard to time is formally referred to as kinetic energy.

When the energy is added to the system the gap between the particles will increase due to which the velocity of the molecules will increase and with increase in the velocity the kinetic energy will also increase automatically.

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Answer:

mass=60kg

h=20m

g=10m/s²

here the work done by the body is equal to its potential energy

work done=P.E.

As we know that P.E.=mgh

putting values

P.E.=60kg×20m×10m/s²

P.E.=1200kgm×10m/s²

P.E.=12000Nm

so the work done by the body is 12000Nm

Answer: C

high; large

Explanation:

The wave energy is related to its amplitude and frequency.

The wave energy is proportional to the amplitude of the wave. So, wave with the most energy will have high amplitude.

Also, frequency is related to wave energy. The larger the frequency, the more the energy of the wave.

Therefore, The waves with the MOST energy have high amplitudes and large

frequencies.

The statement is a law because it accurately describes EVERY observation. No contradiction has ever been observed that would disprove it, or even cast doubt on it.  

(Wellll ... at least, no contradiction that wasn't immediately and easily explainable, like dropping a helium balloon, or a sheet of paper in a high wind.)

The statement is legal because it accurately describes all that is seen. No controversy has ever arisen to disprove it or cause it to doubt.

The force of gravity is the force that the planet or another body of gravity absorbs. Gravity holds all the planets in orbit around the sun.

The greater the size of the two objects and the shorter the distance between them, the stronger the gravitational force. We also know that gravity can work in a complex system with several components.

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Answer:

Mercury

Explanation:

Mercury streches when it is hot so that is why it goes up when the temperature is higher

Answer:

Not sure about the answer but I think its roller coaster

Explanation:

Answer:

golf ball

Explanation:

it is correct on edge

Answer:

-4000 N

Explanation:

1. First let's look at what we know.

Mass: 1000 kg

Initial velocity: 20 m/s

Final velocity: 0 m/s

Displacement: 50 m

2. Let's try and apply a Kinematics equation here.

Looking at what information we have, I would say that this is the best equation:

v[tex]f^{2}[/tex]=v[tex]o^{2}[/tex] + 2aΔx

3. Plug in the numbers.

0 = 400 + 2(a)(50)

0 = 400 + 100a

-400 = 100a

a = -4 m/s^2

4. Use ∑F=ma

∑F = (1000)(-4)

∑F = -4000 N

Answer:

By binding to enzymes' active sites, inhibitors reduce the compatibility of substrate and enzyme and this leads to the inhibition of Enzyme-Substrate complexes' formation, preventing the catalyzation of reactions and decreasing (at times to zero) the amount of product produced by a reaction.

Explanation:

Answer:

C.  R3

Explanation:

Answer:

C.  R3

Explanation:

Plato

Answer:

See Explanation.

Explanation:

Impact metamorphism:

The process in which a rock changes because of extreme heat and pressure caused by a meteorite collision with Earth.

Regional metamorphism:

The process in which buried rocks in a large area are changed by heat, pressure, and fluids.

Contact metamorphism:

The process in which a rock changes as a result

of heat generated from magma.

Dynamic metamorphism :

The process in which a rock changes due to

pressure directed on it.

The typing of metamorphism to its best definition should be explained below.

Impact metamorphism: The process where a rock changes due to extreme heat and pressure caused by a meteorite collision with Earth.

Regional metamorphism: The process where it should be buried rocks in a large area that should be changed by heat, pressure, and fluids.

Contact metamorphism: The process where a rock changes as a result

of heat generated from magma.

Dynamic metamorphism : The process where a rock changes due to

pressure directed on it.

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Answer:

wasting talent

Explanation:

Answer:  A

it's a sign that there might be something causing too much

current to flow in the circuit

Explanation: When a fuse blows, one of the causes may be short circuit. Also, it's a sign that there might be something causing too much

current to flow in the circuit leading to overloading. That is, drawing to much of power that can cause the metal inside the fuse to melt.

Option A is the best answer.

Answer:   All learning occurs through interactions with the environment; The environment ... In the before conditioning phase, an unconditioned stimulus is paired with an ... In our example, the conditioned response would be feeling hungry when you heard ... reinforce the salivation response to make sure the behavior is well learned.

Answer:The answer is C

Explanation:

The waves are often used as a means to transfer digital information such as a text message or website is radio waves. The correct option is C.

Digital information generally consists of data that is created or prepared for electronic systems and devices such as computers, screens, calculators, communication devices. These information are stored by cloud.

The wave used for the same purpose is radio waves which has the high frequency range.

Thus, the correct option is C.

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