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:
Can someone please help?? I Already did number 1 and 2 . Please help!!
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:
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
revolved around the sun two times
rotated on its axis one time
rotated on its axis two times
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.
What is revolution?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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The go kart driver does 1234J of work when hitting a barrier. Assuming the barrier moved 100 meters from its original location, what was the force at which the driver hit the barrier?
A machine used an input force of 200 N to produce an output force of 800N. What is the mechanical advantage of this machine?
Answer:
b.a.5
Explanation:
What percentage of Earth is covered with water?
97
70
3
3.5
20
69
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%
Properties of Light please help me
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.
describe the role of plate tectonics in earthquakes
Answer:
Tectonic plates are constantly moving slowly, sometimes friction between them to lock together and become unable to move.
Explanation:
Most of the water on Earth is
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.
Fred spends most Sunday afternoons at rest on the sofa, watching pro football games and consuming large quantities of food. What effect (if any) does this practice have upon his inertia? Explain.
Fred will increase his mass if he makes a habit of this.
Please help
1. Why is it important for us to know about the changing weather conditions?
2. What kinds of weather can we expect when a cold front is approaching?
Answer:
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 temperaturesAs the cold front passes, winds become gusty. There is a sudden drop in temperature, and also heavy rain, sometimes with hail, thunder, and lightning.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.
Humans use surface freshwater for THERES MORE THAN ONE ANSWER
agriculture
driving
factories
swimming
Answer:
factories
Explanation:
because you need clean water in factories
Try and Answer This One!
Estimate the order of magnitude of the length of a football field,
a. 10-1 m
C. 104 m
b. 102 m
d. 100 m
PLEASE HELP ME
If we did use zero-friction machines for these purposes, how would our everyday lives change?
which has high frequency? i never figure this out
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.
An object, once set in motion, will tend to move in a straight line and at a constant speed. But the law (The Law is Newton's First Law.) isn’t always true. Explain why.
Answer:
Obstructions can happen. Outside forces can act upon it.
Explanation:
The Northern and Southern Hemispheres always have opposite seasons.
A true
B false
How are the poles different than the equator?
A. The poles are colder than the equator.
B. The Sun hits the poles at an angle while the Sun hits the equator head-on.
C. There is great variation in the daytime and nighttime hours at the poles, which is not true for the equator
D. All of the above
How high does Pete lift his sledge hammer if he used a force of 25N to lift the hammer while doing 50J of work?
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
which gas is at room temperature?
A (aluminum
B ( nitrogen
C ( potassium
D ( sodium
Answer:
B ( nitrogen
Explanation:
it is at room temperature
Directions Now that the lab is complete, it is time to write your lab report. The purpose of this guide is to help you write a clear and concise report that summarizes the lab you have just completed. The lab report is composed of two sections: Section I: Overview of Investigation o Provide background information. o Summarize the procedure. Section II: Observations and Conclusions o Include any charts, tables, or drawings required by your teacher. o Include answers to follow-up questions. o Explain how the investigation could be improved. To help you write your lab report, you will first answer the four questions listed below based on the lab that you have just completed. Then you will use the answers to these questions to write the lab report that you will turn in to your teacher. Questions Section I: Overview of Lab 1. What is the purpose of the lab? 2. What procedure did you use to complete the lab? Outline the steps of the procedure in full sentences. Section II: Observations and Conclusions 3. What charts, tables, or drawings would clearly show what you have learned in this lab? Each chart, table, or drawing should have the following items: a. An appropriate title b. Appropriate labels An appropriate labels because it could mean sedimentary rock But it's not spelled correctly. 4. If you could repeat the lab and make it better, what would you do differently and why? There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length. Writing the Lab Report Now you will use your answers from the four questions above to write your lab report. Follow the directions below. Section I: Overview of Lab Use your answers from questions 1 and 2 (above) as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this lab and how it was completed. It should be one to two paragraphs in length. Section II: Observations and Conclusions Use your answers from questions 3 and 4 (above) as the basis for the second section of your lab report. This section provides your reader with charts, tables, or drawings from the lab. You also need to incorporate your answers to the follow-up questions (from the Student Guide) in your conclusions. Overall When complete, the lab report should be read as a coherent whole. Make sure you connect different pieces with relevant transitions. Review for proper grammar, spelling, punctuation, formatting, and other conventions of organization and good writing.motion I will give a 100 points for the full thing
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
Describe the role of plate tectonics for volcanic eruptions, continent formation, seafloor spreading, and mountain formation.
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!
As the Earth orbits the Sun, it gets closer to the Sun at times. This is what causes summer.
A. True
B.false?
Answer:
true heres why
Explanation: because you feed the butterfly falafel again with a sock from a froot loops box
and you made something come out of your but
The mcb of rupa's room is tripped and keeps on tripping again and again . if it is a domestic circuit, what could be the reason of phenomenon?
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.
help pls, answer for brainlist
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
It appears as though the moon disappears and the sun comes out in the daytime. Based on what you know, explain why this is happening in the daytime.
Earth is rotating toward the sun.
Earth is rotating away from the sun.
The moon is rotating away from the sun
The moon is rotating towards the sun.
Answer:
The first one
Explanation:
The Earth is rotating counterclockwise to the sun which means it is turning towards the sun
It appears as though the moon disappears and the sun comes out in the daytime. Based on what you know, explain why this is happening in the daytime.
Earth is rotating toward the sun.
Earth is rotating away from the sun.
The moon is rotating away from the sun.
The moon is rotating towards the sun.
Answer:
The Earth is toward the sun
Explanation:
DONT LISTEN TO ME I AM A CHILD AND I JUST GUESSED
A car moves north at 12 miles per hour.
Which option describes if the given value is speed or velocity?
speed, because there is a mention of time
velocity, because there is a mention of time
speed, because there is a specific direction
velocity, because there is a specific direction
Fireworks twinkle bright colors when ? react with oxygen?
can anyone help me with this??
Answer:
its not clear enouph
Explanation:
The kinetic energies of particles in a sample of matter are increasing. This sample is most likely
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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