Answer:
False!
Explanation:
Energy can only be transformed, changed from one form to another. List 6 forms of energy related to changes in matter.
Is this helpful? :D
Answer:
False
Explanation:
All forms of energy can cause change to occur.
Increase the brightness of the light for the colors red, yellow, orange, and green. What effect did the brightness of the light have on the metal?
(science)
make me brainliest
Explanation:
The observations are as follows: Initially with the plates in the dark, no electrons pass between the plates and no current flows. As we shine light on the plates, going from low energy red to high energy blue, suddenly current begins to flow. How?
Einstein explained the result be describing the light waves as packets of energy. He called the packets of energy photons. Each photon has a specific energy, the shorter the wavelength, the higher the energy. When a high-energy photon hits the plate (such as a green or blue), the photon has enough energy to knock out an electron and then the electron, being negative, will fly to the positive side. At this point, current flows.
The lower energy photons are unable to know out the electrons and no energy can flow.
The exciting thing to note is the treatment of energy as a particle or a packet, it is consistent with the fact energies are not additive. If we can bump electrons with light at 600 tera-hertz , we can�t just use 300 tera-hertz for twice the time and still expect to bump electrons.
What if the photon has greater than the threshold energy required to pop out an electron? The extra energy just goes into the kinetic energy of the electron. This relationship can be described by the following equation.
hf = w + KE
where hf is the energy of the photon.
w is the energy required to bump an electron.
KE is the kinetic energy of the electron.
If the photon has less energy than w, no electron is emitted.
An element is a ________ substance
A. Mixed
B. Pure
C. Combined
D. Human-made
Answer:
b, pure.
Explanation:
an element is a pure substance and it cannot be broken down hope this helped :)
Answer:
An element is a pure substance made up of identical atoms.
Explanation:
hope it helps
and brainliest if helped......
Please help ill mark branliest (im using the last of my points for this so please don't scam me)
can someone write about genetically modified foods and the genetic modification process?
Answer:
ok :)
Explanation: genetically modified organisms (GMOs) are being made by inserting a gene from an external source such as viruses, bacteria, animals or plants (etc) into foods. Genetically modified foods seem to be not as healthy as unmodified foods, according to research. also many people are against it due to the fact that some people go overboard and add too many genetically modified organisms, which causes health risks and unfortunately harms people. sometimes genetically modified food contains toxins and antibiotics. srry i couldnt find much on the process but this is based off my background knowledge so yeah
Which of the following statements about organelles is NOT true?
A. Each organelle carries out only one role in the life functions of the cell.
B. There are some organelles found in plant cells that are not in animal cells.
C. There are organelles in plant and animal cells that work directly with other organelles.
D. Each organelle carries out functions similar to the way organs function in a large organism.
Answer:
A. Each organelle carries out only one role in the life functions of the cell.
Explanation:
Answer:
D
Explanation:
I'm on the same question and my teacher said I was right if I'm wrong I do apologies
What is the difference between a saturated solution and an unsaturated solution?
PLEASE HELP ME ASAP THIS IS DUE IN 10 MINUTES AND I AM STUCK!!
For an investigation, a student records data about four unknown substances.
Picture 1: In comments...
The student then calculates the densities of the unknown substances and compares them with the table of densities of known substances shown below.
Picture 2: In comments
Which unknown substance is most likely carbon?
A. Substance 1
B. Substance 2
C. Substance 3
D. Substance 4
Answer:
c
Explanation:
what is one way water moves through the nonliving parts of an ecosystem during the water system?
Answer:
Water moves through the help of living organisms in an ecosystem. ... Plants absorbs water through their root system and loss by transpiration. Water also moves through the living organisms in an ecosystem. Other nonliving processes such as evaporation, precipitation, water returns back into the atmosphere.
Explanation:
hope this helps you
evaporation!
Explanation: i know im late but i hope this helps other people aswell! <3
Identify the type of heat transfer that occurs in each illustration (conduction, convection, radiation) and provide a 1-2 sentence explanation of how you know. (6th Grade)
What is force?????????
Answer:
a. s s
Explanation:
thats the bottom line cut stone cold said so
Answer:
Force is a push or pull upon an object from the object's interaction with another object.
Explanation:
Whenever there is an interaction between two objects, there is a force upon each of the objects.
Hope this helps and have a great day!
Which statements would best represent a model Newton's Law of action-reaction?
A.
toy car rolling down a ramp
B.
toy rocket down a ramp
C.
toy boat floating in the water
D.
toy tractor being pushed over a hill
Answer:
A
Explanation:
Answer:
Explanation:
It can be several answers as long as you verify your point on why.
Newton's Law of action-reaction says that 'For every action, there is an equal and opposite reaction.'
A: the toy car will be rolling down the ramp, there will be friction and kinetic energy.
C: A toy boat The toy boat pushes against the water (action force), the water pushes back on the boat (reaction force) and pushes it forward.
Sorry if i'm wrong
Red blood cells need iron. They store iron and typically contain more iron than the fluid around them does. Which action would show the blood cells doing active transport?
pushing iron out
bringing iron in
swelling
shrinking
What element is represented by this diagram?
Answer:
Beryllium
Explanation:
It is the element with 4 protons 5 neutrons an 2 outer electrons
The Newton is the SI unit for ____.
temperature
density
weight
mass
Answer:
Mass
Explanation:
Need help please With this.
In a chemical reaction, __________ are the substances present after the reaction.
Answer:
products
Explanation:
Explanation: Substances present BEFORE a reaction occurs are described as reactants. Substances present AFTER a reaction has occurred are described as products.
Lucia is given a picture of several cells. Her task is to identify the cells as plant or animal
cells. How can she pinpoint the cells that are plant cells?
A. She should look for a cell membrane surrounding the cell.
B. She should look for cytoplasm that is filled with organelles.
C. She should look for a large nucleus in the center of the cells.
D. She should look for ovals full of green dots called chloroplasts
Answer:
D She should look for ovals full of green dots called chloroplasts
Explanation:
Plant cells are the only cells that will have chloroplast as it helps the plant go through photosynthesis.
The normal force acts _____ to the surface the object is sitting on.
at a 75-degree angle
perpendicular
parallel
at a 45-degree angle
Answer:
Its perpendicular did the exam :)
Explanation:
Which of the following statements is true?
Like magnetic poles attract each other
There is no relationship between magnetic poles
Like magnetic poles repel each other
Answer:
Like magnetic poles repel each other
Explanation:
Among the following statements, the one that is true is Like magnetic poles repel each other.
What are magnets?Magnets are substances which possess their own magnetic field this magnetic field basically arises from the circular movement of negatively charge electrons. The elements which have unpaired electrons and have spin angular momentum or orbital angular momentum or they are together present are called as Magnets.
The magnetic field present is invisible but it is definitely responsible for the most notable property of a magnet. Magnetic force is a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets.
Therefore, Among the following statements, the one that is true is Like magnetic poles repel each other.
Learn more about Magnets here:
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Need help please With this.
DUDE- HOW IS THAT MIDDLE SCHOOL
Answer:
The volume of the sample is equal to the other sample's volume / 2 times 9 to the 14th power so that would be about 369.47 grams
Explanation:
The function of a cell wall is:
A. A thick rigid structure that surrounds the cell membrane in plants.
B. A thin outer covering found in plants and animal cells. It controls what enters and leaves the cell.
C. The liquid part of the cell where all the organelles are suspended. It also contains nutrients cell waste and water.
D. An organelle found in cells that stores water and nutrients for cells.
Min was writing about changes in the state of matter for a research paper. Which of these changes might she include as examples of sublimation?
Choose the two statements that apply.
A. Clothing is hung outside on a day when the temperature is below the freezing point of water. The clothes dry, even though they freeze first.
B. An ice cube melts on the floor, then it evaporates.
C. Bromine is a reddish brown, liquid element. In a closed container, a reddish brown gas exists above the surface of the bromine.
D. Dry ice changes directly to carbon dioxide gas
Sublimation is the process by which solids are instantly transformed into gases. The forces of attraction between solids are completely defeated when they absorb enough energy. Solids, such as dry ice, undergo sublimation.
What is sublimation?Similar to melting, freezing, and evaporation, sublimation is a form of phase transition, or change in a state of matter. Without ever entering a liquid phase, a substance transforms from a solid to a gas through sublimation. Typical sublimation examples include dry ice, which is solid CO2,additional elements that cannot be sublimated. A solid-solid combination is separated by sublimation when one of the components sublimes (transforms from solid to gaseous state without producing liquid) following heating, leaving the other non- sublimable components behind.Sublimation is the direct transition of a substance from the solid phase to the gas phase without passing through the liquid phase in between. Sublimation is an endothermic phase transition that occurs at temperatures and pressures lower than a chemical's triple point in the phase diagram.To learn more about Sublimation refer to:
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HELP PLZ
What is the traditional definition of gravity?
Answer:
A force of attraction between things that have mass. Gravity can act between objects that are not even touching. In fact, gravity can act over very long distances. However, the farther two objects are from each other, the weaker is the force of gravity between them.
volcanic activity can be responsible for major climate and landscape changes to an area. Which of the following types of volcanic activity has the greatest effects on climate?
A: Quiet eruptions
B: Earthquakes
C: Island building
D: Ash in the atmosphere
BRAINLIEST
Answer:
I'm pretty sure the answer would be B
Explanation:
A few months ago I had an obsession with this volcano book but it sounds the most accurate I mean everything else on there would cause stuff but earthquakes cause so much damage to the earth.
Answer: A is your answer
Explanation:
Identify and define the SI unit for force.
Answer: The SI unit of force is the newton, symbol N.
Explanation:
anybody wanna help?????
Answer:
straight line down then left and right that should be it
Explanation:
HELP PLEASE ON MY FINAL
Grass
Rabbit
Fox
Mushroom
Which of the above organisms gets its energy from photosynthesis?
Only I
Only IV
I, II and III only
I, II, III and IV
Answer:
grass
Explanation:
it is a plant, hope this helps
Answer:
Only I
Explanation:
rabbits and foxes are not plants so it does not go through photosynthesis (they eat food to get their energy instead) . A mushroom is a decomomposer that breaks things down to get it's energy thus make the grass the only plant that goes through photosynthesis.
Need help please With this.
Answer:question 3:(W)
question 4:(c)
Source:trust me bro
THIS IS A REPOST I WILL STILL GIVE BRAINLIEST FOR ALL ANSWERED QUESTIONS
Directions: Identify the manipulated variable and responding variable for each hypothesis.
HINT: If (fill in manipulated variable), then (fill in responding variable)
1. If plants are watered, then growth height will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
2. If chocolate is given to teachers, then amount of homework will decrease.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
3. If trees have leaves, then bird nests will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
4. If acid rain is in water, then fish population will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
5. If calcium is given, then bone strength will increase.
Manipulated variable: ________________________________________________________________________
Responding variable: ________________________________________________________________________
1. Manipulated: Water
Responding: Growth Height
2. Manipulated: Chocolate Given
Responding: Amount of Homework
3. Manipulated: Trees with Leaves
Responding: Number of Bird Nests
4. Manipulated: Acid Rain
Responding: Fish Population
5. Manipulated: Calcium Given
Responding: Bone Strength
Think about the manipulated variable as the changing item in the experiment. If this changes, the response will. (This is the Independent Variable)
Think of the Responding Variable as the result of the variable only can change when Manipulated is changed. (This is the Dependent Variable)
Hope This Helps :)
Manipulated variable in each case are watering of plants, number of chocolates, trees having leaves,water in acid rain, amount of calcium respectively and responding variables are growth height, amount of homework,number of bird nests,fish population,bone strength.
What are variables?Variables are defined as any characteristics, number or quantity which can be measured . It can also be called as a data item . It is called as variable because they can vary and can have variety of values.
There are three types of variables 1) manipulated variable where in a condition is specified, 2) responding variable which is dependent on manipulated variable 3)controlled variable which do not change
Example of manipulated variables are number of hours spent by a student studying , that of responding variable is result of a student and temperature is an example of controlled variable.
Learn more about variables,here:
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Are these cells like the single-celled organisms? We use the same word for the cells in your heart as for a single-celled organism like the bacteria you saw. Both are called cells. Are there any differences?
Answer:
One you can see with the naked eye and the other you can not.
Explanation:
When your are talking about single celled organisms you can see the cells like bacteria. When you talk about non singled celled organisms you can see that organism.
Answer:
One you can see with the naked eye and the other you can not.
Explanation:
when you are talking about single celled organism you can see the cells like bacteria when you talk about non singled cell organism you can see that organism
The medulla _____.
interprets signals from the sense organs
controls heartbeat and breathing
controls balance and digestion
coordinates muscle movement