How could Armando use this model to test the idea that very steep hills lead to narrow, deep rivers?

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The Answer is particle Z

Answer:

The model is particle W

Explanation:

Answer:

If it loses an electron it becomes a positive ion. Picture 1.8 Some atoms lose electrons and become positive ions. A lithium atom has 3 protons and 3 electrons. It can lose one of its electrons, making it an ion

Explanation:

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question

mass = 38.4 g

density = 10.5 g/cm³

We have

[tex]volume = \frac{38.4}{10.5} \\ = 3.6571428...[/tex]

We have the final answer as

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For 1 it is balanced for both Net Horizontal force and net vertical force.

For 2 Vertical is balanced and horizontal is unbalanced.

For 3 vertical is not horizontal is.

For 5 both are balanced.

for 6 vertical is, horizontal is not.

for 7 vertical is horizontal is not.

for 8 neither are balanced.

Answer:

C is the correct formula

Explanation:

Answer:

Melting Is when a substance is actually melting and melting point is a point at which a substance is able to melt.

Answer:

repeat the experiment

Explanation:

I am big brain. if she wants to know if it is correct, repeating the exact ay would show her if it is right or if she did something wrong

Answer: The answer is D - radioactive decay

Explanation:  I took the test and got this question correct.

A source of energy that is internal to the Earth's systems is radioactive decay which is option D.

The source of energy that is internal to the earth's systems is radioactive decay.
Radioactive decay is a natural process in which unstable atomic nuclei release energy in the form of radiation. The decay of radioactive isotopes found in the Earth's crust and mantle produces this energy. It contributes to the Earth's internal heat and is important in many geological processes, including plate tectonics and volcanic activity. Radioactive decay, unlike external sources such as the Sun, Moon, and tides, is a source of energy that begins within the Earth itself.

Therefore, the correct option is option d

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Answer:

C. Magnesium, Strontium, and barium

These four elements are in the same group or family. They are in the alkaline earth metals.

Answer:

A. The concentration of a substance dissolved in a liquid

Explanation:

Molarity is the mol/L of solution, so it is the concentration of the substance, in moles, in a certain volume of solution.

Answer:

1n

Explanation:

Answer:

The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term. Democritus proposed that different types and combinations of these particles were responsible for the various forms of matter.

Explanation:

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The idea of indivisibility of the atom upheld by Dalton was largely derived from early Greek philosophers.

John Dalton was the first scientist to begin an empirical study of atomic theory. Before this time, all that was known about the atom were largely based on the speculation of Greek philosophers.

However, one recurring theme among Greek philosophers is that atoms are indivisible. This idea that atoms are indivisible became a very strong pivot of the Dalton's theory of the atom.

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Answer:

Platinum and Gold ig.

Answer:

3) it is a good conductor heat.

Explanation:

An object is made from a material that is hard, shiny, and can be hammered into thin sheets. The aforementioned properties are those of a metal. Therefore, the other property of a metal is that, it is a good conductor of heat and even electricity because there valence (outer) electrons are delocalized. Some examples of chemical elements that are metals are iron, gold, sodium, silver, copper etc.

Answer:

Element

Explanation:

Chromium (24th Element) has 24 protons and 24 electrons.

Chromium is a Transition Metal.

Chromium has a molar mass of 52.00 g/mol.

Chromium-58 has 34 neutrons, 24 protons, and 24 electrons.

Answer:

The core of the sun

Explanation:

The core of the sun acts like a furnace. The sun's energy comes from nuclear fusion

Answer:

In experiment after experiment, they're always right

Explanation:

In science, nothing is accepted unless it can be supported by empirical evidence, this includes the quantum laws.

A plethora of experiments have confirmed these quantum laws to be correct and reliable.

Hence, all the quantum laws are backed up by plenty scientific evidence that show that the laws are indeed correct.

Answer:

Well, in order for a substance to be soluble, it needs to be able to be dissolved, especially in water.

Answer:

A

Explanation:

Thy are all in the color blue.

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Answer:

There is no bar graph attached to this question, however, the question can be answered based on the information given in the question.

The answer is A) average level of happiness

Explanation:

In an experiment, the dependent variable is the variable which is measured by the experimenter. It is the variable that responds to changes made to another variable called independent variable.

In the case of this question, it can be determined, even without the bar graph, that the experiment entails how candy allowance affects a child's happiness. Hence, the candy allowance is changed to influence or cause a response in the child's happiness, which is then measured. Therefore, the AVERAGE LEVEL OF HAPPINESS is the dependent variable.

Answer:

If we begin with a cube of ice composed water molecules in a crystalized form we are dealing with water molecules with their lowest amount of energy. These molecules have such low amounts of energy that their movement is almost imperceptible. This form of matter for water is at and below 0 C.

If we add heat to the ice thereby increasing the energy in the molecules of water these molecules begin to vibrate at much higher velocities. These vibrations allow for the molecules of water to escape their positions in the crystal and begin to flow into a liquid. This range of temperature is from 0 C to 100 C.

If we continue to add energy and drive the temperature up to 100 C the molecules of water will vibrate so rapidly that they will break away from the liquid form and move into a gaseous state as steam escaping into the the air. This vaporization actually takes place constantly at the surface of the water creating a thin vapor layer at the surface of any body of water.

This is a simplification of the chemical process but basically the amount of energy in the molecules will determine the phase of matter.

Explanation:

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Answer:Newton's 2nd law

Explanation:

Answer: newtons 2nd law

Explanation:

The area = 313.612 cm²

Force (F) can cause objects to move

While pressure (P)is the force per unit area

[tex]\tt P=\dfrac{F}{A}[/tex]

weight=force=105 pounds(lb)⇒english units

pressure = 2.16 lb/in²

Thea are (A)

[tex]\tt A=\dfrac{F}{P}=\dfrac{105}{2.16}=48.61~in^2\\\\1~in^2=6,4516~cm^2\\\\48.61~in^2=313,612~cm^2[/tex]

Answer:

It's right below 620. So id say 618 ML

Explanation:

Answer:

When the big power lines are down, electricity is going through the ground and up you bike to the handles, so when yo touch it, you are electrocuted

Explanation:

Answer: This is true! Living organisms use two major types of energy storage.

Explanation:

The speed of sound is the distance that sound waves travel in a given amount of time. ... Generally, sound waves travel most quickly through solids, followed by liquids, and then by gases. For a given medium, sound waves travel more slowly at lower temperatures.

Answer:

increasing the temperature will also increase the number of collisions between molecules per unit time. Which means molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

Slow down, but generally not move from there place. Which means molecules at a lower temperature have less energy, meaning sound waves can't travel through in a solid.

Explanation:

Sound waves can only travel in space if there are enough particles around to transmit the energy in the wave from the source thus meaning more kinetic energy more sound waves being able to quickly get through

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