What happens when a light beam passes from air into water? Select all that apply. *

the light wave slows down in water
refracted light bends in the water
some of the light is reflected off of the surface
total internal reflection
the light wave speeds up in water

Answer:

3a) w = mg = 60 x 10 = 600N

b) W = fd = 600 x 10 = 6000J

c) chemical to gravitational potential via the mechanical pathway

4a) W = fd = 200 x 0.5 = 100J

b) chemical to kinetic via mechanical pathway

5a) F = W/d = 40000/20 = 2000N

b) some is transferred into the thermal store, some are dissipated into the surrounding

Explanation:

Answer:

The sample is most likely gaining thermal energy

Explanation:

If the kinetic energies of particles in a sample of matter are increasing, the sample is a liquid that is warming.

All particles have energy, and the energy varies depending on the temperature of the sample of matter. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.

The temperature of a substance is a measure of the average kinetic energy of the particles.

If the kinetic energies of particles in a sample of matter are increasing, the sample is a liquid that is warming.

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Answer:

It´s C. Balanced forces are equal and opposite forces that act on the same object. That's why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion.

Explanation:

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- 0utc8st

The best statement which explains it is the object in motion will remain in motion unless acted on by unbalanced forces. Hence, option C is correct.

The Sun and the asteroids that orbit it make up the gravitationally bound program known as the Solar System. It was created 4.6 billion years ago when a massive interstellar molecular cloud collapsed because of gravity.

The Sun is home to the vast majority (99.86%) of the solar system, with Jupiter owning the lion's share of the remaining mass. Mercury, Venus, Earth, and Mars are the four planets in the inner solar system. These terrestrial planets are mostly made of rock and metal. The four giant planets of both the outer solar system are significantly more massive and bigger than the terrestrial planets.

Equivalent and counterbalancing forces acting on the same object are known as balanced forces. They are canceled out as a result. As equal and opposing forces act on various objects, action-reaction forces do not cancel out. Movement is a common outcome of them.

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Answer:

The first one

Explanation:

The Earth is rotating counterclockwise to the sun which means it is turning towards the sun

Answer:

1.It's important that we understand how the climate is changing, so that we can prepare for the future. Studying the climate helps us predict how much rain the next winter might bring, or how far sea levels will rise due to warmer sea temperatures.

2.As the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.

Fred will increase his mass if he makes a habit of this.

The MCB of a rupas room is tripped and keeps on tripping again and again, and if it is a domestic circuit, what could be the reason for this phenomenon?

The reason could be a short circuit which is resulting in higher level of currents to pass through the MCB which is resulting in trip every time.

OR

The MCB is faulty and might need a replacement.

To Diagnose the problem further more.

Turn off all the switches in rupas room and then try turning on the MCB. If it trips again then MCB is faulty (Subjective to the fact there everything was normal before this issue and no signs of short circuit or spark in wiring were observed)

If MCB does not trip in point 1 then Turn ON all the switches one by one. This shall give you the cause of problem.

Answer:

3% of the earth's water is fresh. 2.5% of the earth's fresh water is unavailable: locked up in glaciers, polar ice caps, atmosphere, and soil; highly polluted; or lies too far under the earth's surface to be extracted at an affordable cost. 0.5% of the earth's water is available fresh water.

To break the numbers down, 96.5% of all the Earth's water is contained within the oceans as salt water, while the remaining 3.5% is freshwater lakes and frozen water locked up in glaciers and the polar ice caps. Of that fresh water, almost all of it takes the form of ice: 69% of it, to be exact.

As these charts and the data table show, the amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth, but the majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers. Source: Gleick, P. H., 1996: Water resources.

The earth has an abundance of water, but unfortunately, only a small percentage (about 0.3 percent), is even usable by humans. The other 99.7 percent is in the oceans, soils, icecaps, and floating in the atmosphere. Still, much of the 0.3 percent that is useable is unattainable.

Explanation:

I hope this answer help you.

Answer:

The Purpose of the lab is to displace water to determine volume.And weigh objects to get mass.

Explanation:

Questions

Section I: Experimental Overview

1. What is the purpose of the lab, the importance of the topic, and the question you are trying to answer?

The Purpose of the lab is to displace water to determine volume.And weigh objects to get mass. Then We would divide the two and get density.How do we determine density?

2. What is your hypothesis (or hypotheses) for this experiment?

You get mass from weighing objects and you get volume from displacing water. Then you can divide them both to get density.

3. What methods are you using to test this (or each) hypothesis?

We were using scales and water displacement methods to get density.

Section II: Data and Observations

4. Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings?

In a lab guide, the key results are those that support my working hypotheses or serve to reject these assumptions. Moreover, the key results may also be other discoveries that are important to understand the processes and/or mechanisms investigated in the experiment.

In my experience, the best way to summarize the key results is to create diagrams and illustrations that enables me to study relationships between different data

5. Do you have quantitative data (numerical results or calculations)? Do you have qualitative data (written observations and descriptions)? How can you organize this date for your report?

yes from the experiments we received numerical data for each object then we would use that data to find the mass volume to get density. We drew pictures to create a visual representation. You can simplify it into a small short worded sentence.

Section III: Analysis and Discussion

6. What do the key results indicate?

That we got the density from the mass and volume. By using different methods to get them.

7. If you constructed graphs, what trends do they indicate in your data?

We didnt need to construct graphs.

8. Were there any problems with the experiment or the methods? Did you have any surprising results?

No there was not any weird things that happened. The findings were normal.

Section IV: Conclusions

9. What do the results tell you about your hypothesis(es)?

That we were right.

10. How do the data support your claim above?

That we were right about our hyphothesis.

11. If you could repeat the experiment and make it better, what would you do differently and why? there is no point

Writing the Lab Report

Now you will use your answers from the questions above to write your lab report. Follow the directions below.

Section I: Experimental Overview

Use your answers from questions 1–3 as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this experiment and how it was completed. Outline the steps of the procedure in full sentences. It also provides potential answers (your hypothesis/es) relative to what you expected the experiment to demonstrate. This section should be 1–3 paragraphs in length.

Section II: Data and Observations

Use your answers from questions 4–5 as the basis for the second section of your lab report. This section provides your reader with the data from the experiment, in a summarized and concise way. No paragraphs are required for this section, but you do need to include the key data and observations from which you will generate your analysis and discussion. This section is objective.

Section III: Analysis and Discussion

Use your answers from questions 6–8 as the basis for the third section of your lab report. This section provides your reader with your interpretation of the data set. You will also give an example of any calculations or formulas you used to analyze your data. Also, you will want to include any graphs that you made and interpret them for the reader.

If you did construct graphs, your Student Guide included information on which graphs to construct. Graphs should have the following:

a. Appropriate titles

b. Appropriate labels for each axis

c. Appropriate scales for each axis

d. Correct units for the data

Explanation:

i did the assignment

Answer:

its not clear enouph

Explanation:

Answer:He lifts 2 meters

Explanation:We are trying to find the distance. The formula for distance is W/Force. 50 is our amount of work. 25N is how much force was used. Divide the work bye the force. 50/25=2M

Answer:

Chemical changes are also known as chemical reactions. The “ingredients” of a reaction are called reactants, and the end results are called products.

Explanation:

Answer:

The primary properties of visible light are intensity, propagation-direction, frequency or wavelength spectrum and polarization, while its speed in a vacuum, 299 792 458 m/s, is one of the fundamental constants of nature.

Answer:

Tectonic plates are constantly moving slowly, sometimes friction between them to lock together and become unable to move.

Explanation:

Answer:

b.a.5

Explanation:

Answer:

factories

Explanation:

because you need clean water in factories

Answer:

i think A because i was being teached that the earth moves around the sun every year

Explanation:

The earth moves slowly so how can it go around the sun in 1 day or 2 times a day or 2 times a year

The sun revolve about a point in the centre of our galaxy taking the entire solar system with it at a speed of 220 km/s. When the sun rises in the morning on December 20th and then rises again December 20th of the next year, Earth is said to have revolved around the sun one time. The correct option is A.

The movement of the earth around the sun in a particular path is defined as the revolution. The earth revolves from west to east which is in the anticlockwise direction. The revolution speed of the earth is 30 km/s⁻¹.

The one revolution of the earth around the sun takes around one year or precisely 365.242 days. Revolution has a direct influence on the varied length of day and night time. The duration of days and nights are same at the equator.

The earth moves slowly so how can it go around the sun in 1 day or 2 times a day or 2 times a year.

Thus the correct option is A.

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Answer:

The Earth is toward the sun

Explanation:

DONT LISTEN TO ME I AM A CHILD AND I JUST GUESSED

Answer:

C for the first question. C for the second ( i think ) I searched the third up it should be C again ( ikr CRAZY 3 c's ) B I think for the fourth one and D for the last question.

IF ANY OF THESE ARE WRONG I DEEPLY APOLOGIZE MY HEAD IS HURTING FROM THIS ALREADY

Answer: D

Explanation:

It would be answer D, youre correct. Frequency is how many "cycles" or "things" per second. The reason D looks so different is because the amplitude is not the same.

Answer:

Plate tectonics are responsible for the following events by:-

Explanation:

Plate tectonics are parts of the crust which is moved by the mantle of the Earth.

The Crust is divided into parts called "Tectonic Plates"!

When tectonic plates move they cause some sorts of anomalies, and some of those anomalies are the ones in the question.

When there are two tectonic plates move towards each other, they form mountains, or when wo tectonic plates move away from each other, they cause the sea floor to expand!

Sometimes, they can cause dangerous accidents because of the vibration of the tectonic plates. These vibrations can cause volcanic eruption and tsunamis and Earth quakes.

When these volcanic eruptions occur, they can form underwater volcanoes, and make new islands, which can lead to continent formation!

I hope this answer helps, and I also hope this answer is what you are looking for!

Answer:

the answer is I and IV hope it's right

Explanation:

Answer:

70 percent

Explanation:

the answer is 70 percent

Answer:

70%

Explanation:

It's about 71% so to round it, it would be about 70%