Can anyone help if u know it pls!!

Answer:

Use Aufbau's principle,

1s^2,2s^2,2p^6,3s^2,3p^6,4s^2

Fill 20 electrons,

Max number of electrons that sub shells can hold,

s=2

p=6

d=10

f=14

Answer:

when the car is moving in a straight line with constant velocity

On a velocity - time graph, if the line crosses the x - axis it depicts that the object has started moving in the opposite direction.

Conversion of mass from grams into kg :

Answer: Dog's speed = (20 + 35) /12 = 4.583 m/s

Dog's velocity = (20-35)/12 = -1.25 m/s

Explanation: Speed is a scalar quantity so we don't care about direction which means we add the magnitude of both the directions i.e. east and west.

About the velocity, it's a vector quantity. So, we must be very careful with the directions and signs. In cartesian coordinates system, we generally take the right side of origin as the positive x-axis and the left side of origin as the negative x-axis. So, considering the same fact, we consider east as positive side and west as the negative side.

Therefore, when we add 20m + (-35m), we get = -15m and you already have the time period of  12 s.

Answer:

d. displacement

Explanation:

Displacement is a vector quantity that refers to "how far out of place an object is"; it is the object's overall change in position.

Answer:false

Explanation:because it means you're pushing yourself too much and you need to use smaller weights

Answer:

Explanation:

V=k*q/r

V= (9*10⁹) * 5*10⁷/2

V = 9*10⁹ * 25*10⁶

V = 225*10¹⁵

T he relationships between the systems of units of temperarua can be completed in the table

             K = ºC +273

           ºF = 9/5 ºC + 32

Systems of units are systems that arbitrarily define which are the fundamental units of measurement. The most widely used system worldwide is the International Measurement (SI) where the basic units are: Length, mass, time, absolute temperature, current, amount of substance and light intensity, all other units are derived from these.

But there are still in the world several practical systems that are used, among them the temperature measurement is one of the measurements that has more practical systems, for example the centrifugal and fahrenheit degrees are extremely used.

The relations to pass between systems of units of temperature we have;  

           K = ºC +273

           ºF = 9/5 ºC + 32

With these expressions we can make the changes of units

1) T = 0ºC

              K = 0 + 273

              K = 273 K

              ºF = 9/5 0 + 32

              ºF = 32º F

2) T = 212ºF

               ºC = 5/9 (ºF-32)

               ºC = 5/9 (212 - 32)

               ºC = 100ºC

                K = 100 + 273

                K = 373

3) T = 450 K

               ºC = K - 273

               ºC = 450-273

               ºC = 177ºC

               ºF = 9/5 177 +32

               ºF = 350.6ºF

4) T = 98.6ºF

                ºC = 5/9 (98.6 - 32)

                ºC = 37ºC

                 K = 37 +273

                 K = 310K

5) T = -273ºC

                 K = -273 +273

                 K = 0

                 ºF = 9/5 (-273) + 32

                 ºF = 523.4ºF

6) T = 294K

                  ºC = 294 -273

                  ºC = 21ºC

                  ºF = 9/5 21 + 32

                   ºF = 69.8ºF

7) T = 77ºF

                   ºC = 5/9 (77 -32)

                   ºC = 25ºC

                    K = 25 + 273

8) T = 225K

                    K = 298K

                   ° C = 225 - 273

                   ºC = -48ºC

                   ºF = 9/5 (-48) + 32

                   ºF = -54.4ºF

With the equivalences between sysems of units, units can be converted from one system to another.

Be careful since some of the equation is of physics, the temperature must be in absolute units or in degrees kelvin.

In conclusion, with the relationships between the systems of temperature units, the table can be completed

Learn more about systems of temperature here:

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Answer:

Explanation:

First, let's review the ideal gas law, PV = nRT. In this equation, 'P' is the pressure in atmospheres, 'V' is the volume in liters, 'n' is the number of particles in moles, 'T' is the temperature in Kelvin and 'R' is the ideal gas constant (0.0821 liter atmospheres per moles Kelvin).

Answer:

"My God is an amazing God."

[tex] \large \mathfrak{Answer : }[/tex]

The Correct option is D. mobile point-of- sale device.

The digital payment system that enables sellers to accept payment at trade shows, food trucks, concerts, or farm stalls is called a mobile point-of-sale device. Thus, the correct option for this question is D.

The advantages of a digital payment system are as follows:

The mobile point-of-sale device (mPOS) is cost-effective. It involves the breaking down of monthly maintenance and payments on the basis of a cloud-based subscription. It authorizes the sellers to accept the payment at trade. It is one of the fastest modes of payment.

Therefore, a mobile point-of-sale device is a digital payment system that enables sellers to accept payment at trade shows, food trucks, concerts, or farm stalls. Thus, the correct option for this question is D.

To learn more about the Digital payment system, refer to the link:

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Answer:

galaxy is a group of stars held together by gravity

Answer:

d

Explanation:

thats the defentios

hope this hepls

branliest plzz

[tex]\\ \tt\longmapsto Acceleration=\dfrac{v-u}{t}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{2.7-0}{2}[/tex]

[tex]\\ \tt\longmapsto Acceleration=\dfrac{2.7}{10}[/tex]

[tex]\\ \tt\longmapsto Acceleration=27m/s^2[/tex]

Answer:

⟼Acceleration=tv−u

⟼Acceleration=22.7−0

⟼Acceleration=102.7

⟼Acceleration=27m/s2

Answer:

Most energy crises have been caused by localized shortages, wars and market manipulation. Some have argued that government actions like tax hikes, nationalisation of energy companies, and regulation of the energy sector, shift supply and demand of energy away from its economic equilibrium.

Answer: As the temperature increases, the flow time increases.

Explanation: i took the test

The relationship between the variables on this graph is that As the temperature increases, the flow time increases, therefore the correct answer is option B.

It is a scale of temperature used to measure the temperature, the kelvin scale of temperature is also known as the absolute scale of temperature.

The Standard International unit of thermodynamic temperature is the kelvin, often known less frequently as the degree Kelvin. The formal definition of one kelvin is 1/273.16  of the thermodynamic temperature of pure water's triple point.

As shown in the graph as the temperature increase across the X axis the flow time is increasing as well, these two variables are directly proportional to each other.

Thus, The graph shows a link between the variables, showing that when the temperature rises, flow time also rises, hence option B is the proper response.

Learn more about the kelvin scale of temperature from here,

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Answer:

A hot air balloon

Answer:

2 repel attracts light water

Answer:

A magnet has two poles.

Like poles repel each other and unlike poles attract

An electromagnet is used to separate large masses of iron scrap.

The strength of the magnetic field of an electromagnet is increased by inserting a core of soft iron.

In a torch we use a dry cell as the source of electricity.

To light a table lamp and to run a refrigerator, we use mains as the source of electricity.

A group of two or more cells is called a battery.

Conductors pass electricity through them.

Answer:

its decressing, or getting colder

Explanation:

hope this helps

branilest plzz

Lets do

We know

The rate of change of velocity is acceleration .

[tex]\\ \sf\longmapsto a=\dfrac{dv}{dt}[/tex]

[tex]\\ \sf\longmapsto dv=adt[/tex]

Integrate both sides

[tex]\\ \sf\longmapsto \int dv=a\int dt[/tex]

As acceleration is constant .Take it outside of integral .On velocity we can take limit u to v and time from 0 to t

[tex]\\ \sf\longmapsto {\displaystyle{\int}}^v_u dv=a{\displaystyle{\int}}^t_0 dt[/tex]

Hence

[tex]\\ \sf\longmapsto v{\huge{|}}^v_u=at[/tex]

[tex]\\ \sf\longmapsto v-u=at[/tex]

[tex]\\ \sf\longmapsto v=u+at[/tex]

Answer:

The change in her position (from beginning to end), along with the direction, is considered her displacement.

Explanation:

Answer:

The change in her position ( from beginning to end), along with the direction, is considered her displacement. This value is a measurement and a direction. The total distance along the path from her starting point to her endpoint is considered her distance. This value is a measurement only.

Answer:

7 m/s East

Explanation:

The speed of the man relative to the plane is given as 7 m/s. Given that he's walking in the corridor of the plane, this is his speed relative to the plane. Since he's moving to the back of the plane, and the aircraft is headed to west, the man's direction relative to the plane is East.

Answer:

M1 v1 + M2 v2 = M1 V1 + M2 V2

Assuming we are to fine V2  (the problem is not clear on this point)

50 * 5 + 100 * 10 = 50 * 8 + 100 V2    conservation of momentum

V2 = (250 + 1000 - 400) / 100 = 850 / 100 = 8.5 m/s

Answer:

The kinematics equations describe the motion of an object undergoing constant acceleration

Explanation:

The kinematics equations describe the motion of an object undergoing constant acceleration. These equations relate the variables of time, position, velocity and acceleration of a moving object, allowing any of these variables to be solved for if the others are known

i dont know for real

Answer:

a. Mucous membranes protect the inside parts of your body that are exposed to air, in a similar fashion to how your skin protects your external body. Mucous membranes are rich with mucous glands that secrete mucus to help keep the membranes moist.

b.Nose hairs act as a filter that prevents dust, pollen, and allergens from entering your lungs. When particles enter your nose, they get stuck on a thin layer of mucus that coats your hairs. Eventually, the particles either get sneezed out or swallowed. Your nose is also filled with microscopic hairs called cilia.

.

c.The epiglottis is a small, movable "lid" just above the larynx that prevents food and drink from entering your windpipe. But if the epiglottis becomes swollen — either from infection or from injury — the airway narrows and may become completely blocked.

d.Coughing can have causes that aren't due to underlying disease. Examples include normal clearing of airways, irritants such as smoke and gas, tobacco use or improperly swallowing food and liquids.

e.In humans there are about 15 – 20 incomplete C-shaped cartilaginous rings which reinforces the anterior and lateral sides of the trachea to protect and maintain the airway open. (The cartilaginous rings are incomplete because this allows the trachea to collapse slightly to allow food to pass down the esophagus.

f. .Pulmonary surfactant is a surface active material composed of lipids and proteins which is found in the fluid lining the alveoli.

g.The pleura includes two thin layers of tissue that protect and cushion the lungs. ... The very thin space between the layers is called the pleural cavity. A liquid, called pleural fluid, lubricates the pleural cavity so that the two layers of pleural tissue can slide against each other.

h.The ribs are the bony framework of the thoracic cavity. The ribs form the main structure of the thoracic cage protecting the thoracic organs, however their main function is to aid respiration. There are twelve pairs of ribs. Each rib articulates posteriorly with two thoracic vertebrae by the costovertebral joint.

Answer:

A path for electricity is current

Don't let yesterday take up too much of today.

Explanation:

Answer: I didn't see a difference because the large ball's vertical displacement and velocity are the same as the small one's.

Explanation: