You have to cast the shadow of your pencil on the wall with the
help of candles in a dark room. How can you obtain the shadow of
same size, small size and big size of the same pencil?
Answers
Answer:
Shadows are formed when an opaque object comes in the path of light. Opaque objects do not allow light to pass through them.
Explanation:
I hope this helps
Related Questions
For one green bacterium, how many new cells will it form when it reproduces?
What will the color of each new cell be?
Answers
Answer: 2 and the color will be green.
Explanation: I did it in my head, I don't know how to explain but I hope this helped a bit. =)
What is an ellipse please help)
Answers
In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant. As such, it generalizes a circle, which is the special type of ellipse in which the two focal points are the same.
Maybe they might use that math thing for Science.
List 2 evidences for climate change.
This is 6th grade science. Amplify.
Answers
Answer:
Global Tempurature is rising
Sea level is rising
Explanation:
This is evidence of climate change. Depending on where you live it could be different like in florida there was a drought.
1. our sea level is rising my a lot
2. our global temperature has changed a lot over the years as well.
Name and Title:
Include your name, instructor's name, date, and name of lab.
Objectives(s):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome. Using your summary questions at the end of your virtual lab activity, please clearly define the dependent and independent variables of the experiment.
Data:
Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.
Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One
Moon Two
Planet One
Planet Two
Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.
Using two to three sentences, summarize what you investigated and observed in this lab.
Astronomers use a wide variety of technology to explore space and the electromagnetic spectrum; why do you believe it is essential to use many types of equipment when studying space?
If carbon was the most common element found in the moons and planets, what element is missing that would make them similar to Earth? Explain why. (Hint: Think about the carbon cycle.)
We know that the electromagnetic spectrum uses wavelengths and frequencies to determine a lot about outer space. How does it help us find out the make-up of stars?
Why might it be useful to determine the elements that a planet or moon is made up of?
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Methane is a gas at room temperature and pressure. Explain why this is the case.
Answers
Answer:
hope it helps ❤
Explanation:
Methane only has london dispersion forces since it is nonpolar. London dispersion force is the weakest intermolecular force, so the forces between its molecules will be weak. This leads to a low boiling point that is lower than room temperature, which makes it a gas at room temperature.
Answer this ASAP please! Question: Circle the compounds. (Science)
Answers
Answer:
should be D, G, H, I, Z
Explanation:
compounds have more than 2 seperate atoms
How do scientists know that the mantle is less rigid than crustal rocks?
Scientists use seismic waves to collect information about the mantle.
Scientists have collected samples from the mantle.
Satellite images provide information about the mantle.
Scientists use materials from volcanic eruptions to study the mantle.
Answers
Answer:
Scientists have collected samples from the mantle.
Explanation:
Answer:
it is the first one
Explanation:
i looked it up
Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)
Answers
Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome
Explanation:
rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.
Using the data on the map, compare the chance of precipitation in Colorado to the
chance of precipitation in New York State. Include both states in your answer and
support your answer with scientific reasoning.
Answers
Oil is a powerful source of energy used for cars, machines, and many other purposes. While studying sources of energy that could replace the use of oil, a student thinks about solar power, wind power, nuclear power, and electric batteries. The students asks,"Which type of source will waste the least energy and provide the most energy in all situations?"
Which best describes why a scientist would ask a different question than this one?
O The question asks about subjective personal preferences regarding energy.
O The question focuses on the objective measurements of amounts of energy.
O The question has too wide of a focus, as though all situations can be studied at once.
O The question is focused on the future and finding new answers about changing needs.
Answers
Answer:
C
Explanation:
scientists usually focus on one specific problem, rather than a whole range. so the answer would be that it's too wide a focus.
btw this is where the crown is on the bottom of the question
Answer:
c
Explanation:
Which of these is NOT a sign that a chemical reaction has happened?
A) release of heat or light
B) a new precipitate (solid) forming
C) change in state (ex. solid to liquid)
D) bubbles or gas forming
Answers
Answer:
A
Explanation:
B, C, and D all have something that causes the reaction But A Did itself
Answer: C, because a change in state is reversable without a reaction due to the fact that it is still the same substance, with no additional substances being made or without converting the current substance into another.
GIVING BRAINLIEST TO WHOEVER HAS THE BEST ANSWERS! :D
1. Describe and explain all the possible energy transformations that occur with a dishwasher that uses electrical energy.
2. Discuss the different observations that you would record during an investigation into the energy transformations of a lamp that uses electrical energy.
Answers
Answer:
1. All the possible energy transformations that occur with a dishwasher that uses electrical energy are heat energy because the dishwasher uses the electrical energy to heat the water, also electrical energy is transformed into kinetic energy and sound energy the reasoning behind this is that the parts moving inside the dishwasher is causing the sound.
2. Take as an example a light bulb inside a lamp to illuminate a room. When you plug it in a plug and turn it on, light is generated. More precisely, heat (Joule effect) is produced inside the lamp by its internal filament (conductive material) when it passes through the electrical energy, generated by the friction of the atoms that are inside it when it encounters a resistance.
Explanation:
Pls mark as brainliest i really need it
Describe how the Rube Goldberg device design that you created follows the law of conservation of energy. Be sure to include both parts of the law of conservation of energy in your description.
Answers
What type of person studies and collects data on the weather?
Answers
Which definition is correct?
a physical change creates a new substance because bonds are broken or formed
a physical change can happen without changing any characteristics of the substance
a chemical change occurs when the substance remains the same but the shape, or other physical characteristics change
a chemical change produces a new substance by breaking and forming new bonds
Answers
Answer:
last one is correct
Explanation:
bcoz when a reaction takes place there is the formation of new products with the help of old one .
How does the initial mass of the candle compare with the final mass? Does this violate the Law of Conservation of Mass? Explain your reasoning.
Answers
What kind of rocks would you expect to see on Mars? What evidence supports your response?
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these days cloths made out of a mixture of synthetic fiber and natural fibers are more popular than those made purly out of synthetic fiber. Discuss the reason for this
Answers
Answer: Clothes purely made of synthetic fibers are not comfortable in a hot and humid environment as they don't have the property to absorb water or sweat quickly so their water-resistant property makes them unsuitable for hot humid environment .
Explanation:
Mixing of synthetic fiber and natural fibers enhances the properties such as strength, elasticity, and ease of ironing and washing. Generally in hot environments it is preferred to wear a mixture of synthetic and natural fiber than wearing only clothes made from synthetic fiber .
Moreover, mixing synthetic fibres with natural fibres enhances their properties, such as strength, elasticity and ease of washing and ironing. Hence, these days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres.
What was one was one important impact of Supreme Court's ruling in Bush v. Gore
Answers
Answer: the answer is b or c
Explanation:
I took it
Say maddie is the best for 100 points-
Answers
Louise has put together the setup shown in the figure to investigate how different masses respond to different forces. A mass is attached to two stretched springs. It rides on a track with very little friction. When Louise pushes the mass to either side and then lets it go, it oscillates back and forth, much like a pendulum. Explain why the mass oscillates.
Answers
Answer:due to the kinetic energy stored in spring
Explanation:
this happen because when spring ia stretched it store kinetic energy and it has the ability to move back and forward so this happen
Due to stored kinetic energy in the spring, the mass oscillated like a pendulum.
It is given that a mass is attached to two springs that are stretched. When Louise pushes the mass to either side and then lets it go, it oscillates back and forth resembling a pendulum.
This movement is observed because the mass if the block placed is shared between the two springs. This let the two springs to store the energy in them. This could also be given as potential energy.
When the mass is moved in the either side, the potential energy in the springs are turned into kinetic energy leading to movement of the mass. Since, the mass is help up with two springs, oscillatory movement or to and fro motion of the spring is observed.
To know more about pendulum, click below:
https://brainly.com/question/26449711
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Explain how thinking about chemicals at the atomic and molecular scale can help to explain observable phenomena, such as the changes you see when you etch copper.
Answers
Not a straight up answer, but moreover to help you get it: (Circuit Boards)
Aside from the tasks it performs, perhaps the most important function of a circuit board is providing a way to integrate the electronics for a device in a compact space. A PCB allows components to be correctly connected to a power source while being safely insulated. Also, circuit boards are less expensive than other options because they can be designed with digital design tools and manufactured in high volume using factory automation.
Partially straight up, helping you get the answer: (Copper Chloride)
Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate.
Etching helps us to see the structure of the atoms of copper.
What is etching?The term etching refers to the process by which we expose the inner structure of copper. It is usually done electrically or by the use of an acid. The surface of the copper is removed and the inner structure of the copper is shown.
As such, when you etch copper, you can see the inner structure such as the arrangement of the atoms of copper and how they fit together.
As such looking through the etched copper would help you to appreciate that matter is composed of atoms.
Learn more about etching of copper:https://brainly.com/question/28190564
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Award is 100 Points for the First Correct Answer!
Question:
which has more calories : table sugar or aspartame ?
Answers
Table sugar, also known as sucrose, contains 4 calories per gram, whereas aspartame contains only 0.2 calories per gram. This makes table sugar much higher in calories than aspartame.
Answer:
Table sugar has more calories than aspartame. A teaspoon of table sugar (4 grams) contains approximately 16 calories, while a teaspoon of aspartame (0.5 grams) contains only 0.4 calories. This is because table sugar is a carbohydrate and contains four calories per gram, while aspartame is a non-nutritive sweetener and is virtually calorie-free.
2. please answer i really need this and the answer is not 8
Answers
Potassium + Chlorine --> Potassium Chloride
Write the balanced chemical equation for this.
Will mark brainliest :)
Answers
Answer:
The balanced equation is 2K(s) + Cl2(g)→2KCl(s)
Answer:
The balanced Chemical is normaly
and Potassium+ Magnissium+ Potassium
Explanation:
I hope makatulong
and Pa follow po plss
Organize it fossil
If somebody knows the answer please tell me
Answers
Answer:Carbon-14 dating is second column tho
Explanation:So i remember doing this in 5th grade at my school so if u send me ur email i. can try send you my labs i hate doing them.
which of these atoms are electrically neutral?
Answers
Atoms are electrically neutral because they contain equal quantities of positively charged protons and negatively charged electrons. Electrons and protons have equal but opposite charges, so the result is no net charge. Ions are atoms that have gained or lost electrons.
Answer:
the blue
Explanation:
if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral.
Please help, I’ll give brainliest!
Answers
Answer:
the coefficient of NO3 is going to be 2
Explanation:
Cu+2NO3−+2H2O→Cu2++2NO2+4OH−
Is every solute the same in terms of solubility?
Answers
Answer:
Yes, they are always somewhat soluble.
Explanation:
The formula for calculating density, D, is D=M/V, where M represents mass and V represents volume.
For liquids, volume is often given in cubic centimeters (cc), which is the same as cm 3. If the density of an unknown liquid is 1.6 g/cc, what is the mass of 800 cc of the unknown liquid in grams (g)?
0.002 g
1.6 g
500 g
1280 g
Answers
Answer:
The answer is; D
Explanation:
Density 1.6g/cc means that every 1(one) cubic centimeter of the liquid has a mass of 1.6 grams.
Then, what about 800 cubic centimeters – how much mass, in grams, will it have ?
= 1.6 * 800 = 1280 g