Think about a neutral magnesium atom. Then think of a magnesium ion with a 2+ charge.

How are these two alike? same number of __________

How are they different? different number of ________

Group of answer choices:
A. protons, neutrons
B: protons, electron
C: electrons, neutrons
D: electrons, protons

Answers

Answer 1
Same number of protons
Different number of electrons

Related Questions

a cup of tea is mixutre true or false​

Answers

Answer:

this is very true

Explanation:

I I should know I'm a tea fanatic

22. Explain in detail what happens to particles before, during, and after vaporization.

Answers

Answer:

Vaporization occurs when a substance changes from a liquid to a gas. The molecules in a liquid are in constant motion while staying relatively close together due to intermolecular forces. When an increase in temperature occurs, the molecules' kinetic energy also increases. If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. The most energetic particles at the surface escape from the surface of the liquid as a vapor as it gets warmer. Liquids evaporate faster as they heat up and more particles have enough energy to break away.

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A car moved 40 km north and 90 km south. What is the displacement of the car?
A. 50 km south
B. 50 km north
C. 10 km east​

Answers

Answer:

A. 50 km south

Explanation:

hope this helps!

a train starting from a distance of velocity of 90 km.h
-1 in 10 minutes assuming that the acceleration is uniform find the acceleration and the distance travelled by the train for attending the velocity​

Answers

To make this problem solvable and you can get the help you need, I'll complete and arrange some data.

Answer:

Acceleration: [tex]0.0417\ m/s^2[/tex], Distance=7,500 m

Explanation:

Uniform Acceleration Motion

It's a type of motion in which the velocity of an object changes uniformly over time.

Being a the constant acceleration, vo the initial speed, vf the final speed, and t the time, the following relation applies:

[tex]v_f=v_o+at\qquad\qquad [1][/tex]

The distance traveled by the object is given by:

[tex]\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2][/tex]

Using the equation [1] we can solve for a:

[tex]\displaystyle a=\frac{v_f-v_o}{t}\qquad\qquad [3][/tex]

The problem will be rewritten as follows:

A train starting from rest reaches a velocity of 90 km/h in 10 minutes. Assuming that the acceleration is uniform, find the acceleration and the distance traveled by the train for attending the velocity​.

Let's take the relevant data:

vo=0

vf=90 Km/h*1000/3600 = 25 m/s

t = 10 minutes = 10*60 = 600  seconds

Now compute the acceleration by using [3]:

[tex]\displaystyle a=\frac{25-0}{600}=0.0417[/tex]

[tex]a=0.0417\ m/s^2[/tex]

Finally, compute the distance:

[tex]\displaystyle x=0*600+\frac{0.0417\cdot 600^2}{2}[/tex]

[tex]x=7,500\ m[/tex]

Note: We used the value of the acceleration with more precision than shown.

Acceleration: [tex]\mathbf{0.0417\ m/s^2}[/tex], Distance=7,500 m

PLEASE HELP !!

In order to describe the velocity of an object, which three pieces of data are needed?

Answers

Distance from the reference point

Arrange the following events in the mantle convection process. Use numbers 1-5.
a. Lithospheric plates move in the asthenosphere due to rising and sinking of
materials.
b. The decomposition of radioactive elements causes heat in the interior part of
the Earth
c. Heat slowly rises to the mantle and creates convection current.
d. Heat moves to the core.
e. The process repeats as cycle.

Answers

Answer:

1) Lithospheric plates move in the asthenosphere due to rising and sinking of materials is 1.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core

5) The process repeats as cycle.

Explanation:

Mantle convection is the gradual slow creeping of movement of the Earth's mantle which is as a result of convection current which transfer heat from the interior to the surface of the Earth .

The process of mantle convection start with

1. Lithospheric plates move in the asthenosphere due to rising and sinking of materials is and thus form the two component of the mantle.

2) The decomposition of radioactive elements causes heat in the interior part of the Earth. This is as a result of accretion which is associated to sea flooding

3) Heat slowly rises to the mantle and creates convection current.

4). Heat moves to the core, cools down by conduction and convection of heat.

5) The process repeats as cycle.

The proper and correct arrangement of events in the mantle convection process are:

1. The decomposition of radioactive elements causes heat in the interior part of  the Earth.

2. Heat moves to the core

3. Heat slowly rises to the mantle and creates convection current.

4. Lithospheric plates move in the asthenosphere due to rising and sinking of  materials.

5. The process repeats as a cycle.

Convection is considered to be one of the most efficient ways through which heat is transported from the interior of planet Earth to the surface.

Mantle convection can be defined as the very slow transfer of heat due to the movement of Earth's solid silicate material within the mantle.

Basically, the slow creeping of the mantle causes a transfer of heat from the white-hot core to the brittle lithosphere during mantle convection.

Furthermore, the heating of the mantle takes place from below (the core) and it rises upward in hotter regions while it sinks down in colder regions.

The proper and correct arrangement of events in the mantle convection process are:

1. Heat is caused in the interior part of  the Earth due to the decomposition or decay of radioactive elements.

2. Heat moves to the core.

3. Heat slowly rises from the Earth's core to the mantle and creates convection current in the asthenosphere, which is the plastic layer of the mantle.

4. Lithospheric plates move in the asthenosphere due to rising and sinking of  materials.

5. The process is then repeated as a cycle.

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What is the mass of 5 m3 of cement of 3000 kg/m-3​

Answers

Answer:

It is 15000 Kgs.

If a bicyclist travels at 15 km/h, how long will it take her to travel 30 km?​

Answers

2 hours to get to 30km

Technological design leads to the development and innovation of new technologies.

Which statements represent innovation? Check all that apply.

Solar panels have increased in efficiency over the past 20 years.

The Sun is the primary source of energy for the solar system.

Alternative energy sources are one method for meeting energy needs.

Amore aerodynamic automobile uses less fuel.

Natural selection ensures that only the fittest survive.

Answers

Answer:

Solar panels have increased in efficiency over the past 20 years.

Alternative energy sources are one method for meeting energy needs.

Amore aerodynamic automobile uses less fuel.

Explanation:

Innovation is defined as the introduction or development of something new.  Innovation is an idea that is transformed into reality using technology and knowledge.

Statements that represent innovation are:

Using solar panels with more efficiency is an innovation because earlier it was less efficient but using knowledge and technology, they created a solar panel with increased efficiency.The use of alternative energy methods is an innovation because no one has thought before that they can use any other alternative sources of energy. for example: use of water to generate electricity rather than only drinking. Amore aerodynamic automobile uses less fuel. It is innovative to make a device that uses less fuel in comparison to other automobiles and it is an innovation with advantages to natural resources and the environment.

Hence, the correct options are: "A, C, and D".

What defines an element?
energy levels
electrons
neutrons
protons

Answers

i think it’s protons! sorry if it’s wrong.
Protons is the answer just took the test ;)

What are three types of electromagnetic waves that can be used to take
photographs??

Answers

Answer:

x-rays, Infrared rays, microwaves.

The speed of a river boat is 40 km/h and the rate of flow of the

river is 8 km/h. Moving along the same direction as the flow of

the river, the boat traveled 240 km. Calculate the distance the

boat could travel going against the stream in the same time

period.

Answers

Answer:

Distance the boat would travel going upstream = 160 km

Explanation:

First, the time of travel of the boat downstream is calculated.

Time of travel = distance/speed

distance = 240 km;

speed of travel = 40 + 8 = 48 km/h ( since the boat is going downstream)

Time = 240/48 = 5 hours

Therefore, the boat travels for 5 hours.

The distance the boat will travel in 5 hours going upstream is then calculated

distance = speed * time

speed of boat  going upstream = 40 - 8 = 32 km/h

Distance = 32 km/h * 5 hours = 160 km

PLEASE HELP!! ILL MARK BRAINLYEST!!!

A chemical change occurs when a substance changes phase.


True
False

Answers

Answer:

False

Explanation:

In the decimal number 40.04672, what number is in the 100th's (hundredths, 1/100s)place? ​

Answers

Answer:

6

Explanation:

because the numbers before the decimal point are whole numbers so that would mean the 4 & 0 before the points the ones and tens place. and anything behind a decimal goes in order as usual ones,tens,hundredths, thousandths, ten thousandths, and so on. so that what makes the 6 be in the hundredths place.

Which of the following is TRUE about velocity?

a if velocity changes the object could be speeding up
b if velocity changes the object could be slowing down
c an object with constant velocity is at rest
d Constant velocity is velocity that doesn’t change
e if velocity changes it is accelerating

Answers

Answer:

A

Explanation:

Velocity is when something fast moves

I hope i helped

d) constant velocity is velocity that doesnt change.

its not a, because if it changes you dont know for sure whether or not its speeding up or slow
ing down. its not always going to be speeding up.

its not b either for the same reason, but because its changing doesnt mean that its just speeding/slowing down

not e either since acceleration is different from velocity, you use velocity to find acceleration but this is just wrong.


hope this helped:)

A ball initially at rest is dropped from a window 24.3 m off the ground. How long does it take for the ball to reach the ground?

Answers

Answer:

The ball takes 2.23 seconds to reach the ground

Explanation:

Free Fall Motion

A free-falling object falls under the influence of gravity only. An object being acted upon only by the force of gravity is said to be in a state of free fall. Free-falling objects do not have air resistance.

If an object is dropped from rest in a free-falling motion, it falls with a constant acceleration called the acceleration of gravity, which value is [tex]g = 9.8 m/s^2[/tex].

The distance traveled by a dropped object is:

[tex]\displaystyle y=\frac{gt^2}{2}[/tex]

Knowing the height h from which the object was dropped, we can find the time it takes fo hit the ground:

[tex]\displaystyle t=\sqrt{\frac{2h}{g}}[/tex]

Since y=24.3 m:

[tex]\displaystyle t=\sqrt{\frac{2\cdot 24.3}{9.8}}[/tex]

t=2.23 seconds

The ball takes 2.23 seconds to reach the ground

How much force does a 35 kg child have that is running through the house at an acceleration of 20 m/s^2?

Answers

Answer:

The answer is 700 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question

mass = 35 kg

acceleration = 20 m/s²

We have

force = 35 × 20

We have the final answer as

700 N

Hope this helps you

A car has a mass of 1500 kg, how much acceleration is produced by 35000 N of force?

Answers

Answer:

The answer is 23.33 m/s²

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

From the question we have

[tex]a = \frac{35000}{1500} = \frac{350}{15} = \frac{70}{3} \\ = 23.33333...[/tex]

We have the final answer as

23.33 m/s²

Hope this helps you

What is similarity?

Answers

Answer:

same things

Explanation:

what is measurement ?​

Answers

Answer: Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or events. The scope and application of measurement are dependent on the context and discipline. In the natural sciences and engineering, measurements do not apply to nominal properties of objects or events, which is consistent with the guidelines of the International vocabulary of metrology published by the International Bureau of Weights and Measures. However, in other fields such as statistics as well as the social and behavioural sciences, measurements can have multiple levels, which would include nominal, ordinal, interval and ratio scales.

Explanation:

Measurement is a noun that shows the size and length of something established by measuring. Measurement is a unit system of measuring

I hope this helped

A student is given a 5.4 g mineral sample. She determines that the volume of her sample is 2 cm3. What is the density of her mineral

Answers

Answer:

6.7

Explanation:

A 0.660 kg ball is dropped from rest from the top of a building and falls for 5.65 seconds. How tall was the building ?

Answers

Answer:

The height of the building is approximately 156.58 m

Explanation:

The mass of the ball dropped from rest from the building top = 0.660 kg

The time in which the ball falls, t = 5.65 seconds

The height, h, of the building is given from the following equation of motion;

h = u·t + ¹/₂·g·t²

Where;

u = The initial velocity of the ball = 0 m/s

g = The acceleration due to gravity = 9.81 m/s²

Plugging in the values, we have;

h = 0 × 5.65 + ¹/₂ × 9.81 × 5.65² ≈ 156.58 m

The height of the building, h ≈ 156.58 m.

Digging downward through a soil profile, how deep would you have to go before you found recognizable fragments of the parent rock for the soil?

Answers

You Willis have to go about 6 -7 ft down

how do initial velocity and final velocity differ

Answers

Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached as maximum acceleration.

Make a claim about the time interval between lunar phases.
I will mark as BRAINLIEST ✨
just pls help ASAP
due by 4:00pm
plss

Answers

Answer:

The Lunar month is the time period for the moon to complete ONE revolution around Earth. SIDEREAL MONTH: 27.3 days SYNODIC MONTH: 29.5 days

17. What is the definition of condensation?

Answers

The definition of condensation is water which collects a droplet on a cool surface when humid air is in contact with it
The conversion of vapor or gas to a liquid

The average speed of a runner in an 800 meter race was 7.0 meters per second. How
long did it take the runner to complete the race?

Answers

Answer:

114.29s

Explanation:

average speed = distance/Time

Given

speed = 7m/s

distance = 800m

Required

Time taken by the runner to complete the race

From the formula:

Time = Distance/speed

Time = 800/7

Time = 114.29seconds

Hence it took the runner 114.29s to complete the race

Boron (B) has an atomic number of 5 and an atomic mass of 11. Boron has _____.

5 electrons
6 electrons
11 electrons
16 electrons

Answers

Answer:

the answer is 5 electrons

Explanation:

because its the same name as the amount of protons

The answer is 5 electrons

Convert 6.6 meters to centimeters

Answers

Answer:

660 centimeters

Explanation:

There are 100 cm in 1 m. To convert from m to cm, multiply by 100.

[tex]6.6 \times 100 = 660[/tex]

There are 660 cm in 1 m.

680 cm


hope this helps

Newtons first law of motion states that if the net force on an
object is
then the motion of the
object does not change.
Hurry please!

Answers

Answer:

Newton's first law of motion describes inertia. According to this law, a body at rest tends to stay at rest, and a body in motion tends to stay in motion, unless acted on by a net external force.

If the net force on an object is zero, then the motion of the object does not change.

What is Newton's first law of motion?

According to Newton's first law, a body will stay at rest or continue to move in a straight line at a constant speed if it is at rest or moving in that direction without being subjected to external forces. In truth, moving uniformly in a straight line and remaining at rest have very little in common, according to classical Newtonian mechanics; they can both be thought of as the same state of motion as seen by different observers, one of whom moves at the same speed as the particle and the other who moves at constant speed in relation to the particle. The law of inertia is a name for this premise.

Newton's first law of motion states that if the net force on an object is then the motion of the object does not change.

To know more about Newton's first law of motion:

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