Will give brainliest :) please help :(

Answer: you need to specificlly write down what you did for your lab report and do what all of thet stuff says to do

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So I went threw the student guide and read it carefully. Then I went threw the walk threw with the teacher and the step by step guide to get the lab done. when did multiple test an example is the height of the track and we did multiple times on that height to see it the results where same or had little difference.  As I went threw it I recorded the data because I was asked to. then i filled out the questions for the lab!

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just did it hope it helps future people

Answer:

B

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got it right on edge

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Its A porosity

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There ya gooo.

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How am I supposed to draw something in text? Oh, I know! _/\_/\_/\_/\_/\_/\_

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Liquid???? I'm confused on what you are asking it has caffine?

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Answer:

The Answer is A

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Please let me know if I am wrong

Answer:

1.weathering is the action were a rock starts breaking off or worn out erosion is by natural causes like wind.

2. weathering if your every near a cliff or a mountain you might see rocks falling of

erosion would be if you ever come by a rock a plant my grow inside of it and start breaking

Explanation:

i might have gotten #2 mixed up with weathering and erosion but you could see more answers

Answer:

The substances in both test tubes are reactive only at high temperatures.

Explanation:

Bubbling occurs in test tube 2, which is a sign of a chemical change. Hope this helps.

Answer:

C)The substances in both test tubes are reactive only at high temperatures.

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I did the test.

Answer:

People holding the slinky supply the energy to make the patterns. To make pattern 1, people have to shake the slinky back and forth at a certain speed. To make pattern 2, the slinky has to be moved back and forth faster (higher frequency). To make pattern 4, the people need to move the slinky back and forth much faster. It is much easier to make pattern 1 than pattern 4 because it takes less energy. This illustrates the relationship between frequency and energy – the higher the frequency, the higher the energy.

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Physical and chemical changes are different because one deals with changes to ones shape or form, while chemical is changing one substance to another.

Explanation:

A example of a physical change would be cutting a block of wood into a cube of would, its physical change changes from a block to a cube. A chemical change is changing the substance into another substance so for example, burning that cube of wood in a fire. The fire is burning the wood into ash meaning it's no longer wood but ash.

Hope this helps.

Ans: Elements in the same period have the same number of electron shells.

Answer:

In this instance, the sound wave travels 340 meters in 1 second, so the speed of the wave is 340 m/s. Remember, when there is a reflection, the wave doubles its distance. In other words, the distance traveled by the sound wave in 1 second is equivalent to the 170 meters down to the canyon wall plus the 170 meters back from the canyon wall.

Explanation:

Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. Therefore, in below given ways, speed of each wave can be expressed.

Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave.

There is a relation between energy of wave. frequency of wave, and wavelength of wave

Mathematically,

E=hc/λ

where,

E = energy of electromagnetic wave

h is planks constant having value 6.67×10⁻³⁴js

c is speed of light that is 3×10⁸m/s

λ is the wavelength of electromagnetic wave

The sound wave moves 340 meters in one second, hence its speed is 340 m/s. In the event of a reflection, the wave's distance doubles. The distance covered by sound wave in one second is comparable to 170 metres down to a canyon wall + 170 meters back.

Therefore, in above given ways,  speed of each wave can be expressed.

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Answer:

a. 0.33 g/mL

Explanation:

We already know what the mass is (9 grams) so we have to find the volume of the cube next.

Volume = lwh

             =(3)(3(3)

             = 27

To find density, you have to find mass/volume

density = mass /volume

density = 9 g /27 mL             (cm 3 and mL are basically the same thing)

            = 0.33 g/mL

Answer:Instead of “theory” scientists use the word hypothesis to describe a possible explanation for a scientific mystery. Theories in science are hypotheses that.

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Answer: what? whats the quiestion?

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the wave bounces back off the first media and returns to it origanal resting place

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Answer:

This is by diffusion.

Explanation:

The slideshow describes what happens. Diffusion in liquids is slower than diffusion in gases because the particles in a liquid move more slowly. It happens faster if the temperature is increased

Answer:

Puerto rico and Cabezon Peak

Explanation:

sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”

Hope this helped!

Answer:

Wave speed, frequency and wavelength in refraction

Although the wave slows down, its frequency remains the same, due to the fact that its wavelength is shorter. When waves travel from one medium to another the frequency never changes. As waves travel into the denser medium, they slow down and wavelength decreases.

Explanation:

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Answer:

Waves. Refraction is an effect that occurs when a light wave, incident at an angle away from the normal, passes a boundary from one medium into another in which there is a change in velocity of the light. Light is refracted when it crosses the interface from air into glass in which it moves more slowly.

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All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference, and all waves have a wavelength, frequency, speed and amplitude.

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As a wave moves into shallow water, its orbitals “feel the bottom,” causing it to slow down.  you will see a sea of red tail lights in front of you: the cars in front of you are all  Why does the wavelength of waves change as they approach a beach direction, so at any given spot in the ocean, waves are typically coming from

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I hope I help :)

Answer:

Explanation:

Your answer should be in the attached pdf

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Circuit breaker.

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The chemical formula for hydrogen peroxide is H₂O₂. The total number of atoms in 1 molecule of hydrogen peroxide is four atoms. Two atoms of hydrogen and two atoms of oxygen.

Chemically, hydrogen peroxide has the formula H₂O₂. It is a somewhat more viscous liquid than water, and very pale blue when it is pure. For consumer use, it is typically diluted in water and used as an oxidant, bleaching agent, and antiseptic. For industrial use, larger concentrations are utilized.

Hair bleaching, surface cleaning, and tool disinfection are all done using hydrogen peroxide. It is also utilized in gardening and dental hygiene.

Two hydrogen and two oxygen atoms make up one molecule of H₂O₂. Therefore, two molecules of H2O2 contain four hydrogen and four oxygen atoms each. Two hydrogen atoms and one oxygen atom make up a water molecule.

Thus,  The total number of atoms in 1 molecule of hydrogen peroxide is four atoms.

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Answer:

FIRST ONE

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