Answer:
Newton's Third Law of Motion
Explanation:
A rocket expels hot gases at a very high pressure very quickly, and these gases have lots of energy, and according to Newton's third law, every action has an equal and opposite reaction. So, expel lots of gas at a high rate, and the energy of the gases being pushed out propels the rocket upward. Hope that helps!
Leandra is baking cookies, and they are ready to come out of the oven. Before she takes them out of the oven, she puts oven mitts on. Why does Leandra do this?
A Heat energy moves from warmer objects to cooler ones.
B Heat energy moves from cooler objects to warmer ones.
C The light energy from her hands will transfer to the cookies.
D The coolness of her hands will transfer to the cookies and will make them cold.
Answer:
A.
Explanation:
Heat can't come from a cold object but can from a warm of hot one.
Select the substance or substances that are homogeneous mixtures
Question 22 options:
Solution
Compound
Colloid
Molecule
Suspension
Answer:
colloid, suspension, solution
Heather is investigating the properties of light and how it travels. She places a glass on the windowsill and waits for the sun to shine on the glass and observes what happens. Next, she places a piece of cardboard in front of the glass. Which statement describes the results of her observations?
A Since glass is translucent, most of the light energy was reflected from the glass.
B When the cardboard was placed in front of it, the cardboard absorbed some of the light energy.
C The light from the sun was able to travel through the glass. When the cardboard was placed in front of the glass, it absorbed the light energy from the sun and converted it into heat energy.
D The glass absorbed the light and converted the light energy into heat energy. When the cardboard was placed in front of the glass, the heat was transferred from the glass to the cardboard.
When the sun hit the glass, the light energy was absorbed. When the cardboard was placed in front of the glass, it absorbed the light energy from the sun and converted it into heat energy.
Answer:
nope it is not c
Explanation:
Why is it important to have a control?
IN SOUND ENERGY!!!!!!!
Answer:
why it is important to have control in sound of energy is because noise is airborne sound energy within a broad range of frequencies that has the potential to cause either discomfort or injury to people working in the area. specifically, noise needs to be controlled In order to *protect the hearing of the personnel who work at the facility *
In which direction does heat energy move?
A From cold objects to colder objects
B From colder objects to warmer ones
C From warmer objects to colder ones
D From warm objects to warmer objects
Answer:
B
Explanation:
Because when a cold object is cold it start to get warm because Of the air.
and it start to warm and it gets warm.
Compound: ________________
. Found in soil; contains hydrogen (H) and oxygen (O)
Answer:
hydrogen im doing the same thing but diffrent
Explanation:
2 more questions left
Help I need to know and please answer three of the following questions
Answer:
we'll, metal cups are usually used for coffee so people who bring their coffee to work from home can keep it warm. metal cups however do not keep things cold, it may feel cold on the outside, but that's an illusion. plastic doesn't do much, its just a cold insulator. it is good at keeping things cold because it is a poor heat conductor. foil can keep things warm, but it can also keep things cold. do what you will with the info lol.
Answer:
1.H & E
Explanation:
metal cups keep things hot and cup H is made to keep things both cold and hot but the other cups will melt if you put hot stuff in them and number three is an answer it your self because it says to enter your answer so........
²³√∛·×÷±≈≠≤≥≡≅⇒,⇔∈∉∧∨∞αβΔπФω↑↓∵∴↔→←⇵⇅⇄⇆∫∑⊂⊃⊆⊇⊄⊅∀°∠∡⊥∪∩∅¬⊕║∦∝∞㏒㏑
12 Points/Brainliest
Answer:
In fact, at the sea level, the the sea water boils at 100 degree C where atmospheric pressure is normal. However, the boiling takes place at a lower temperature at the top of a mountain due to low pressure. In other words the boiling is faster at the top of a mountain than that at its foot.
Explanation:
Hope this helped you :)
Think of a creative title for a video about the states of matter
Answer:
States of life ?
Explanation:
maybe this ?
What is Litmus Paper?
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Litmus is a natural dye which is extremely from lichens. it is the most commonly used indicator. Litmus is available in the form of blue and red litmus paper.
When using the absolute method to assess muscular endurance, you should adjust the weight according to each individual's strength ability.
Please select the best answer from the choices provided.
T
F
Steps of photosynthesis:
___ ATP molecules form.
___ Sugar molecules form.
___ Chlorophyll absorbs light energy.
Answer:
Chlorophyll absorbs light energy, ATP molecules form, sugar molecules form. I'm pretty sure this is correct, but if it is not I'm sorry...
Explanation:
What can the student conclude about the experiments? (Attachment)
I WILL MAKE YOU BRAINLIEST
A. Experiments 1 and 2 show chemical changes because bubbles were produced.
B. Experiment 1 shows a physical change because no new substances were produced, and experiment 2 shows a chemical change because a new substance was produced.
C. Experiment 1 shows a chemical change because bubbles were produced, and experiment 2 shows a physical change because a liquid turned into a solid.
D. Experiments 1 and 2 show physical changes because no new substances were produced.
Answer: B. Experiment 1 shows a physical change because no new substances were produced, and experiment 2 shows a chemical change because a new substance was produced.
Explanation: a physical change is reversible
chemical is 2 or more substances combined to make a reaction such as bubbling, change of color or temperature
When a log burns in a fire, a a physical change has occurred. b mass is gained. c new substances are formed.
Answer: technically it is chemical and physical change
Explanation: chemical bc it’s burning and physical bc it’s going from a log to ashes
Answer:
C! New substances are formed.
Explanation:
The burning log will release carbon dioxide, which is a new substance that was never there in the first place.
If a average person and a trained athlete where to exercise which pule rate would be slow and which pulse rate would be fast?
A theory usually has observation and reasoning in its favor, although it may not be experimentally verified.
True or False
How many atoms doesCo(NO3)2 have
Which option is an example of a physical change?
iron rusting
metal denting
silver tarnishing
gasoline burning
please hurry!!!!!
Brainliest if right!
Answer: metal denting
Explanation:
a physical change is something that can be undone. while chemical changes are relatively permanent. You can reshape the metal so you know it is physical.
Which oneeeeeeeeeeeee
Answer:
Agree
Explanation:
This is what I found.
Air is actually a collection of very small molecules; oxygen gas and nitrogen gas are molecules made from two atoms each. Only the noble gases readily exist as single atoms.
Hope this helps.
Answer:
Air is actually a collection of very small molecules; oxygen gas and nitrogen gas are molecules made from two atoms each. Only the noble gases readily exist as single atoms.
Explanation:
I hope this helps. I'm not sure because it would depend on the gas. But I would go with disagree personally.
Sugar, C6H12O6, is made of carbon, hydrogen, and oxygen atoms. Sugar is — (I WILL MAKE U BRAINLIEST
A. a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means
B. a mixture because it is made of different kinds of atoms but they are not chemically combined
C. a solution because it dissolves when mixed with water
D.an element because it is a pure substance whose parts cannot be separated
Sugar is a compound because it is made of two or more atoms chemically combined and its parts cannot be separated by physical means.
Answer:
A
Explanation:
D. is not the answer as there are many elements that go into Sugar
C. Is not the answer because it is not a solution
B. Is not the answer because they are not physically combined but chemically
Therfore A is the answer
Compound: _________________
. Found in air; contains carbon (C) and oxygen (O)
Answer:
Explanation:
Contian power
Use the images below to complete the information on the table and answer questions 1-5.
Answer:
Proton: Positive
Electron: Negative
Neutron: No charge
35 POINTS AND BRAINLIEST!
Which description is not a property of an acid?
A. pH lower than 7
B. Turns litmus paper blue
C. Sour taste
D. Corrosive
Answer:
B turns litmus paper blue
Explanation:
What are some advantages and disadvantages to the acid rain management techniques?
Acid rain management techniques include protect plants from acid rain on falling on them.
What is acid rain?Rain formed when sulfur dioxide and nitrogen oxide react with chemicals in the atmosphere like water,oxygen and carbon dioxide to form sulfuric acid and nitric acid and then falling to ground containing these acids is called acid rain.
Acid rain alters the environment the environment tremendously by damaging plants and aquatic ecosystems.Plants require a specific pH of soil for their optimum growth and nutrition.
Due to acid rain, the acidity of soil increases rendering it unfit for plant growth.Similarly, pH of water also increases which affects the survival of aquatic ecosystems.
It also damages the the monuments made of metals, marbles .Taj Mahal made up of white marble has turned yellowish due to acid rain.
Learn more about acid rain,here:
https://brainly.com/question/22143130
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PLEASE HELP ME!!
What happens at the borders of major tectonic plates?
Radioactivity is very high and large amounts of uranium are found.
Earthquake and volcanic activity is evident.
The edges of plates break apart due to the crushing that occurs.
The borders are calm and free of plate movement activity.
Answer: continental crust is created and oceanic crust is destroyed.
Explanation:
Answer:
Radioactivity.
Where is the DNA stored in a cell?
Answer: nucleus
Explanation:
I need help assappp
...........
I will brainly
And 5 star rate!!
PLS HELP ME! por favor, ayúdame!
Convection is a process in which the heat from one part of a fluid ( which can either be a liquid or a gas ) moves to its other parts .