if a neutral atom has an atomic number of 18,how many protons does it have in the nucleus​

Answers

Answer 1

Answer:

18

Explanation:

atomic number = number of protons


Related Questions

The "Tragedy of the Commons" describes the conflict between a. Developing and developed nations. b. Individuals and society. c. Farmers and industrialized society. d. Canada and Mexico.

Answers

The answer will be choice 2

El profesor de Pedro mencionó en su clase que la distancia promedio de la Tierra a la Luna es de 384 000 000 metros. Ayuda a Pedro a escribir este número en notación científica

Answers

Answer:

384 000 000 en notación científica es 3.84*10⁸

Explanation:

La notación científica es una forma de representar números para simplificar la forma en que se escriben. Esta notación se utiliza para poder expresar muy fácilmente números muy grandes o muy pequeños.

Los números se escriben como un producto:

a*10ⁿ

donde:  

a es un número real mayor o igual que 1 y menor que 10.n es un número entero, que recibe el nombre de exponente u orden de magnitud. Representa el número de veces que se desplaza la coma. Siempre es un número entero, positivo si se desplaza a la izquierda, negativo si se desplaza a la derecha.

Para escribir el número 384 000 000 en notación científica, se realizan los siguientes pasos:

Se mueve la coma decimal hacia la izquierda tantos espacios hasta llegar a la derecha del primer dígito.  En este caso la coma se encuentra al final del número.Se escribe entonces este número, que será el coeficiente a en la expresión a*10ⁿ. En este caso es el valor 3.84, donde el punto representa la coma decimal.Se escribe la base 10 con el exponente igual a la cantidad de espacios que se mueve la coma. Este es un número positivo porque la coma se desplaza a la izquierda.  Entoces, como la coma decimal se mueve 8 lugares, n=8

Entonces, 384 000 000 en notación científica es 3.84*10⁸

What are some questions engineers should ask when researching a problem?

Who will this help?

How long will it take to get it right?

What a materials can be used to solve the problem?

How much will the project cost?

Answers

Answer:

is this a check all that apply or a single answer?

Rain drops fall on a tile surface at a density of 4638 drops/ft2. There are 17 tiles/ft2. How many drops fall on each tile? Answer in units of drops/tile

Answers

Answer: 272.82 drop/tile

Explanation:

Given that the Rain drops fall on a tile surface at a density of 4638 drops/ft2. There are 17 tiles/ft2. How many drops fall on each tile?

Tiles/ft^2 × drop/tiles = drop/ft^2

Tiles will cancel out. Leaving the answer to be drop/ ft^2

Substitutes all the magnitude of the above units.

17 × drop/tiles = 4638

Make drop/tiles the subject of formula

Drop/tiles = 4638/17

Drop/tiles = 272.82

Therefore, 272.82 drop/tile drops fall on each tile? 

Elements in which family are most likely to have properties associated with
metals, such as malleability and good conductivity?

Answers

Answer:  As with all metals, the alkali metals are malleable, ductile, and are good conductors of heat and electricity. The alkali metals are softer than most other metals.

Alkaline earth metals

The alkaline earth elements are metallic elements found in the second group of the periodic table

Explanation:

Which unit would be most appropriate for measuring the mass of a black bean?

Answers

Answer:

milligrams

explanation:

kilograms are too big

Hope this helps :)

A car is going 43m/s and travels 14 m, how
long did it take?

Answers

Answer:

Time = 0.3256 sec

Explanation:

Velocity = displacement / time

43=14/t

So the time =14/43

t=0.3256 sec

3. What is the potential energy of a 8 Newton book sitting on a shelf that is 12 meters high?​

Answers

Answer:

P = 96 J

Explanation:

Given that,

Weight of the book, W = mg = 8 N

It is placed at a height of 12 m

We need to find the potential energy of the book. The potential energy of an object is given by the formula as follows :

E = mgh

mg = Weight

[tex]E=8\ N\times 12\ m\\E=96\ J[/tex]

So, the potential energy of the book is 96 J.

While participating in a blood drive at school, Keona learns that blood has a density of 1.06 g/mL. She donates one pint of blood, which is equal to 473.176 mL. What is the mass of the blood Keona donates, to the nearest hundredth of a gram?

Answers

Answer:

m≈501.57 g

Explanation:

The density formula is:

d=m/v

Let’s rearrange the formula for m. m is being divided by v. The inverse of division is multiplication, so multiply both aides by v.

d*v= m/v*v

d*v=m

The mass can be found by multiply the density and the volume.

m=d*v

The density is 1.06 grams per milliliter and the volume is 473.176 milliliters.

d= 1.06 g/mL

v= 473.176 mL

Substitute the values into the formula.

m= 1.06 g/mL * 473.176 mL

Multiply. When multiplying, the mL will cancel out.

m= 501.56656 g

Let’s round to the nearest hundredth. The 6 in the thousandth place tells us to round the 6 to a 7 in the hundredth place.

m ≈501.57 g

The mass is about 501.57 grams.

Answer:

501.57 g

Explanation:

I hope this helps

Does adding electrons change the mass

Answers

“Gaining or losing electrons has no impact on the number of protons and neutrons an atom has, which is another way of saying that the mass number is not affected by changes in the net charge.”

Distinguish between an energy transfer and an energy transformation in the following situation: A heat lamp warms a baby zebra.

Answers

Answer: Thermal energy: transfer from the air to the lamp to the zebra.

Energy transformation: The lamp converts electric energy to thermal energy.

Imagine a zoo warming a baby zebra with a heat bulb. The heat lamp's circuitry converts electrical energy into thermal energy. Additionally, energy is exchanged as an object moves from one to another. Energy does not need to change form when it is transported.

What is energy transfer and an energy transformation?

The passage of energy from one place to another is known as energy transfer.

When energy transforms, it goes from one type to another. Although energy can be changed or moved, the overall amount always stays the same.

There are three main ways that energy can be transferred: as heat, as sound, and as light.

The light bulb is a prime example of energy being transmitted as light. Alarm clocks are examples of energy transfer by sound, and heating a stove is an example of energy transfer through heat.

Therefore, when it is transmitted, energy doesn't need to change its form.

Learn more about energy transfer here:

https://brainly.com/question/18076437

#SPJ2

Use the formula to solve for the variable of d
v=d/t
A. d = v/t
B. d = vd
C. d = vt
D. d = t/v

Answers

a is correct

Explanation:

beacuse d is directly proportional bto velocity and the time taken

Answer:

C. d=vt

Explanation:

We are given this formula:

[tex]v=\frac{d}{t}[/tex]

and asked to solve for the variable d.

In order to solve for d, we must isolate it on one side of the equation.

d is being divided by t. The inverse of division is multiplication. Multiply both sides of the equation by t.

[tex]t*v=\frac{d}{t} *t[/tex]

[tex]t*v=d[/tex]

[tex]tv=d[/tex]

[tex]d=tv[/tex]

Due to the commutative property of multiplication, we can switch the v and the t.

[tex]d=vt[/tex]

The formula solved for d is d=vt and C is the correct answer.

When neither plate is dense enough to sink into the asthenosphere, the result is a _____ plate boundary.

Answers

Answer:  Convergent collision

When neither plate is dense enough to sink into the asthenosphere, the result is a Convergent (Colliding) plate boundary

In asthenosphere, when plates move towards each other and collide, it is called Convergent  Colliding.

When Oceanic lithosphere moves away from the rising thermal currents at divergent plate boundaries it get crust and cools at the boundaries..  

As Oceanic lithosphere cools,  the density of the rigid plate increases.  

At some plate margins, Oceanic cooler plate became more dense and hot s compared to asthenosphere plate, the plate is sinking beneath the adjacent plate and back into the hotter, deeper regions.  This is called subduction.  Subduction occurs along convergent plate margins.  

For more details, follow the link given below.

https://brainly.com/question/5022534.

a dialogue between two friends discussing about teej​

Answers

"Holy cow !  Can you believe it, Lakshmi ? !  Here it is almost Shraavana again.  Soon the rains will be blowing and the Teej will be biting.  Let's sing, dance, and pray together while it's still so nice outside."

"OK, Priya.  Great idea.  Count me in.  Let's go."

Asking why and how about various things in life is a way to develop which life skill?

Answers

Answer:

Learning skills

Explanation:

Remember, life skills refer to essential mental and physical abilities needed by a person to successfully face challenges of everyday life.

Therefore, an individual who inquires why and how about the various things in life is developing his learning skill, thereby also increasing his critical thinking abilities.

PLZ HELP ME 50 POINTS AND BRAINLEIST Which processes do you suppose are responsible for the formation of hail during a thunderstorm?

Answers

Answer:

The thing responsible is

Explanation:

Hail: When raindrops fall through a very cold region, they form hail.

Conclusion:

It is caused when raindrops move through a very cold region.

Hope this helps....

Have a nice day!!!!

Answer:

Hail forms when raindrops fall in a very cold area

Explanation:

A bicyclist is traveling 10 m/s with an acceleration of 6 m/s2.

How fast is the bicyclist traveling at the end of 20 seconds?

A
20 m/s
B
26 m/s
C
110 m/s
D
130 m/s

Answers

Answer:

The answer is option D

Explanation:

From the question we are finding the final velocity of the bicycle

To find the final velocity given the initial velocity , acceleration and time we use the formula

v = u + at

where

v is the final velocity

u is the initial velocity

a is the acceleration

t is the time

From the question

u = 10 m/s

a = 6 m/s²

t = 20 s

Substitute the values into the above formula and solve

That's

v = 10 + 6(20)

= 10 + 120

We have the final answer as

130 m/s

Hope this helps you.

Answer:B

26m/s

Explanation:

Convert 2.5 feet into inches. (1 ft = 12 in)

Answers

Answer: 30 inches

Explanation: 12x2.5=30

Answer:

Explanation:

1 feet = 12 inch

2.5 feet = 2.5 × 12

= 30 inch

Hope this helps

plz mark as brainliest!!!!

The potential energy of a pear is 5.0 joules. The pear is 4 m high. What is the mass of the apple?​

Answers

Answer:

rrteertewtagtewyewtyewtewy

Explanation:

please help with these tysm

Answers

Picture one prediction there would be more clouds picture two precipitation picture 3 95%

convert 10095 mm to pm​

Answers

Answer:

1.01 × 1013 picometres

Explanation:

multiply the length value by 1e+9

If the pressure of a gas is increased, then the volume will decrease because the particles of the gas will be forced more closely together.

The independent variable is
.

The dependent variable is
.

Answers

ANSWER

independent variable:
increasing the pressure of gas

dependent variable:
decrease in volume

Then the independent variable is the pressure of the gas while the dependent variable is the volume of the gas as it depends on the variation in the pressure of the gas.

What is an ideal gas?

It is an imaginary gas for which the volume occupies by it is negligible, this gas does not exist in a practical situation and the concept of an ideal gas is only the theoretical one,

 

A gas's volume will decrease as its pressure rises because the gas's particles will be pressed closer together.

As the volume of the gas depends on the fluctuation in the gas's pressure, the independent variable in this situation is the gas's pressure.

To learn more about ideal gas from here, refer to the link given below;

https://brainly.com/question/8711877

#SPJ2

if a bicyclist, with initial velocity of zero, steadily gain speed until reaching a final velocity of 26m/s, how far away did she travel during the race (in the same amount of time?

Answers

Answer:

34.46m

Explanation:

Using one of the equation of motion to solve the question. According to the equation v² =u²+2as where;

v is the final velocity of the  bicyclist = 26m/s

u is the initial velocity of the  bicyclist = 0m/s

a is the acceleration due to gravity = 9.81m/s

s is the distance covered during travel

Substitute the given parameters into the formula above to get the distance traveled

26² = 0² + 2(9.81)s

676 = 19.62s

Divide both sides  by 19.62

676/19.62 = 19.62s/19.62

s = 34.46m

The distance traveled by the  bicyclist during the race is 34.46m

A water holding tank measures 85 m long, 55 m wide, and 9 m deep. Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.
What is the total mass of mercury in the tank?
Answer in units of kg.

Answers

Answer:

Mass = 2734.875 kg

Explanation:

Given that A water holding tank measures 85 m long, 55 m wide, and 9 m deep.

The volume = 85 × 55 × 9 =

= 42075 m^3

Traces of mercury have been found in the tank, with a concen- tration of 65 mg/L.

1 m^3 = 1000 L

Convert cubic meters to litres.

42075 × 1000 = 42075000 L

From definition of density,

Density = mass ÷ volume.

Substitute the given density and the calculated density into the formula

65 = mass ÷ 42075000

Cross multiply

Mass = 65 × 42075000

Mass = 2734875000 mg

Convert mg to kg

To do that, you will divide the answer by 1000000

2734875000 ÷ 1000000

= 2734.875 kg

Which of the following is true of the Celsius scale? a. 212 degrees is the boiling point of water. b. 0 degrees is absolute zero. c. 0 degrees is the freezing point of water. d. 32 degrees is the freezing point of water. Please select the best answer from the choices provided A B C D

Answers

Answer:

it is C on NCCA Quiz

Explanation:

Answer:

The correct answer is C., or ¨0 degrees is the freezing point of water¨.

Cutting a log of wood into pieces is a____________________ change

Answers

Answer:

physical change

Explanation:

Physical change are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical change: melting, freezing, shape, size, color...

Answer:

It is physical change

Explanation

Because it didn't change the substances

After the wood is being cut into pieces it cant still be called wood

calculate the pressure if a force of 2n is applied on an area of 2mm²​

Answers

Answer:

P=1 MPa

Explanation:

P=F/A

P=2N/2mm^2

P=1N/mm^2

P=1 MPa

Force=2NArea=2mm^2=0.000002m^2

[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]

[tex]\\ \sf\longmapsto Pressure=\dfrac{2}{0.000002}[/tex]

[tex]\\ \sf\longmapsto Pressure=1000000Pa[/tex]

which was an idea use to distribute the theory of plate tectonics

Answers

Answer:

continental drift

Explanation:

Wegener proposed that the continents plowed through crust of ocean basins, which would explain why the outlines of many coastlines look like they fit together like a puzzle

PLS HELP THIS IS DUE IN 10 MINUTES Describe at least 3 uses of ultraviolet radiation and discuss whether the benefits outwheigh the risk.

Answers

Answer:

Three uses that ultraviolet radiation is used for is for cleaning tools like for doctors or dentists, suntanning, and photo therapy. This can be okay and worth the risk if used carefully and with protection. Otherwise, it can cause cancer or blindness

Explanation:

How is sound produced in our throat​

Answers

In humans sound is produced by the voice box or the larynx.

The voice box is at the upper end of the wind pipe.

Two vocal cords are stretched across the voice box in such a way that it leaves a narrow slit between them.

Air passes through these slits. When air from lungs is forced out through the slit, the vocal cords vibrate to produce sound.
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