Answer:
o.75
Explanation:
A train moving at a velocity of 15 m/s is accelerated to 24m/s over a 12 second period, time traveled by the train is 12 seconds.
The initial velocity u of the train is 15 m/s, the final velocity v is 24 m/s, and the time t is 12 seconds. The train is undergoing uniform acceleration.
We can use the kinematic equation to relate the initial velocity, final velocity, acceleration, and time:
v = u + at
Solving for t:
[tex]\[ t = \dfrac{v - u}{a} \][/tex]
Given that a is the acceleration and is calculated as:
[tex]\[ a = \dfrac{v - u}{t} \][/tex]
Substitute the given values:
[tex]\[ a = \dfrac{24 \, \text{m/s} - 15 \, \text{m/s}}{12 \, \text{s}} \][/tex]
[tex]\[ a = \dfrac{9 \, \text{m/s}}{12 \, \text{s}} \\\\= 0.75 \, \text{m/s}^2 \][/tex]
Now substitute the calculated acceleration back into the equation for \( t \):
[tex]\[ t = \dfrac{v - u}{a} \\\\= \dfrac{24 \, \text{m/s} - 15 \, \text{m/s}}{0.75 \, \text{m/s}^2} \][/tex]
[tex]\[ t = \dfrac{9 \, \text{m/s}}{0.75 \, \text{m/s}^2} \\\\= 12 \, \text{s} \][/tex]
Thus, the time traveled by the train is 12 seconds.
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Your question seems incomplete, the probable complete question is:
A train moving at a velocity of 15 m/s is accelerated to 24m/s over a 12 second period. Determine the time travelled
Please help me I don't know these.
Answer:
Add x on all of them I just took what ur taking rn !!!!!
Explanation:
because the other guy said the same thing
GIVING BRAINIEST!!! please help
Sounds with a small amount of energy travel _________distances than sounds with more energy.
Lesson 4.07
Question 7 options:
shorter
medium
same
longer
Answer:
longer
Explanation:
this is because sounds with small energy due to production of high pitched sound travels longer distances.This sound move at a higher velocity and ata faster rate.
………… is the Energy stored in chemical bonds.
Answer:Energy, potential energy, is stored in the covalent bonds holding atoms together in the form of molecules. This is often called chemical energy. ..
Explanation:This movement is a form of kinetic energy, and the more the molecules move the more kinetic energy they have. Molecules in solids don't move much, they just vibrate
Answer:
ANS is potential energy
Hope it helps
I AM ON A TIMER BE QUICK!! Which material would result in the greatest amount of energy transfer?
A. An absorber that is dark in color and rough.
B. A reflector that is dark in color and smooth.
C. An absorber that is light in color and rough.
D. A reflector that is light in color and smooth.
Answer:
A. An absorber that is dark in color and rough
True or False: Concrete has only positive qualities, and there are no disadvantages to using it.
PLEASE HELP
name and the number of atoms of calium oxide in one molecule of the compound for
pls help I am dead if I dont do it for 2 min
Answer:
1 calcium, 2 oxygen and 2 hydrogen makes for a total of 5 atoms in 1 molecule.
Explanation:
Are the properties of a specific element the same as the properties of a molecule made up of that element? Why or why not?
please help!!! I'm confused.
Answer:
no molecule and properties or defent
In your own words, explain the difference between how a ‘dam system’ transforms hydropower into electrical energy compared with how a ‘run-of-the-river system.
Please help I don't want to watch a video about the states of matter again. Its science
Matter can change phases by changing the amount of _____________________.
Energy does / does not change the phase of matter.
(Make the correct answer red -- or, erase the wrong answer.)
Absolute Zero is when energy / molecules stop moving.
(Make the correct answer red -- or, erase the wrong answer.)
You can use _______________ to change a liquid into a gas.
A soda is liquid that contains _________________ gas to make it bubble and fizz.
A gas and a(n) _________________ will take the shape of a container.
The heating and cooling of molecules will make ______________ change their state of matter.
To change a gas to a liquid, you need to increase / decrease the amount of heat energy. (Make the correct answer red -- or, erase the wrong answer.)
To change a solid to a liquid, you need to increase / decrease the amount of heat energy. (Make the correct answer red -- or, erase the wrong answer.)
Changing a _________________ to a liquid to a gas is changing the phase of matter.
Answer: 1.mass i think thats all know
Explanation:
sorry
Answer:
1: Heat
2: Evaporation is the process of a liquid turning into its gaseous form. When a liquid hits its boiling point, it will evaporate and turn into gas. It can release vapor as well
3:carbon dioxide (a gas)
4:Liquid
5:Elements
Explanation:
Hope this helps!!!
GOOD LUCK !!!!
let me know if wrong
I need help with a DNA research paper
Answer:
XD ok wheres the paper
Explanation:
Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions.
Online Content: Site 1
What are the five natural agents of erosion? What is the driving force behind all of these agents of erosion? (site 1)
Answer:
erosion agents- wind, water, ice, waves and gravity
Explanation:
all forces of the agents of erosion is gravity
Refer to the question above to help answer this question. If the students were to redo their experiment with the water and the antiacid tablet, what would you recommend they do in order to show that the mass was conserved in that chemical reaction.
a. They should put a cover on the beaker so nothing can escape during the experiment.
b. They should use two antiacid tablets instead of one.
c. They should use more water.
d. They should get a new scale and double check their measurements.
Answer:
hrsseWFEwdS
Explanation:
When your muscle gets tired, it builds up the _______ and makes it more powerful.
A.
momentum
B.
blood
C.
cells
D.
tissue
3. Is Pangaea the only “supercontinent” that scientists think has existed?
Answer: No
Explanation:
Pangea is the most RECENT supercontinent. However, scientists believe there have been many more that have come before it
Answer:
the first 1 :l
Explanation:
PLEASE HELP QUICK!!!!
Answer:
Done this assignment :)
Hope it helps!
Sand and gravel in a mixture have the same properties as sand and gravel when they are not mixed.
Since gravel is bigger than sand,
A.
the sand and gravel can never be separated.
B.
the sand and gravel can be separated with a sieve.
C.
the mixed sand and gravel will stick together.
D.
the mixed sand and gravel have a lower volume.
Answer:
b
Explanation:
There are two types of mixture, one is homogeneous mixture and other is heterogeneous mixture. Therefore, the correct option is option B that is the sand and gravel can be separated with a sieve.
What is mixture?When two or more compounds are combined but each ingredient retains its chemical identity, the result is referred to as a mixture. In other words, there is no chemical interaction between the parts of a combination. According to how consistent they are and how well the components' particle sizes match up, mixtures are categorized.
Sand and gravel in a mixture have the same properties as sand and gravel when they are not mixed. Since gravel is bigger than sand, the sand and gravel can be separated with a sieve.
Therefore, the correct option is option B.
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A tall pea plant (Tt) is crossbred with another tall pea plant (Tt). The following Punnett square shows the separated alleles for two pea plants.
Which of the following shows the correct match of the box numbers and the genotype of the offspring?
Btw graph is below (ScreenShot)
Answer:
B.
Explanation:
when you use punnett squares, you cross the different genes with themselves. if T is in the first box on both sides, the genome will be TT. if the box lines up to tt, it will be tt. the boxes on the left use the genes' first letter and the boxes on the right use the second letter.
The result of the cross between Tt and Tt would be TT, Tt, Tt, tt.
Monohybrid crossingThis is a kind of crossing involving only one trait.
The genotype Tt will segregate to T and t respectively.
Crossing Tt and Tt:
Tt x Tt
TT Tt Tt tt
Thus, box 1 will contain TT, box 2 will contain Tt, box 3 will contain Tt, and box 4 will contain tt.
More on monohybrid crossing can be found here: https://brainly.com/question/15314052
Arrange carbon, phosphorus and sulfur in order of reactivity to write their reaction with oxygen.
Answer:
Solid phosphorus reacts with gaseous oxygen to produce solid diphosphorus pentaoxide. ... Methanol burns in oxygen to produce carbon dioxide gas and water vapor.
Explanation:
Solid phosphorus reacts with gaseous oxygen to produce solid diphosphorus pentaoxide. ... Methanol burns in oxygen to produce carbon dioxide gas and water vapor.
Through his investigation, Nathanial identified when equal forces are applied to an object, the motion of the object does not change. He started a data table to record the evidence from his investigation. Which further evidence can Nathanial use to support his findings?
67 N in row one and 110 N in row two
120 N in row one and 67 N in row two
115 N in row one and 65 N in row two
100 N in row one and 65 N in row two
Answer:
A is the answer
Explanation:
During autumn, what happens? (Select all that apply.)
Days become warmer and longer.
Animals prepare to survive the winter.
Some trees begin to shed their leaves.
Plants prepare to survive the winter.
During autumn, several changes occur in nature. Some of the changes that happen during this season include:Days become cooler and shorter,animals prepare to survive the winter.some trees begin to shed their leaves and plants prepare to survive winter, thus all options are correct.
1. Days become cooler and shorter: As autumn arrives, the weather gradually becomes cooler. The days also become shorter, meaning there is less sunlight each day. This decrease in daylight hours is due to the Earth's tilt on its axis as it orbits the sun.
2. Animals prepare to survive the winter: Many animals start making preparations for the upcoming winter during autumn. They may begin to store food or find sheltered places to hibernate. For example, squirrels gather and store nuts, birds migrate to warmer regions, and bears build up fat reserves for hibernation.
3. Some trees begin to shed their leaves: One of the most notable changes during autumn is the colorful transformation of tree leaves. Some trees, such as deciduous trees, shed their leaves during this season. As the days shorten and temperatures drop, the trees receive less sunlight, which triggers the production of a pigment called anthocyanin. This pigment gives leaves their vibrant red, orange, and yellow colors before they eventually fall off.
4. Plants prepare to survive the winter: Just like animals, plants also make preparations to survive the harsh conditions of winter. They may enter a state of dormancy or store energy and nutrients in their roots to survive until spring. Some plants produce seeds or fruits during autumn, ensuring their offspring can grow when conditions become favorable again.
In summary, during autumn, days become cooler and shorter, animals prepare for winter, some trees shed their leaves, and plants make preparations to survive until spring. These changes are part of the natural cycle of life and adaptation to seasonal variations.Thus, all options are correct.
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In which situation would osmosis most likely occur in cells?
Across a semi-permeable membrane that separates solutions of the same concentration
Across a semi-permeable membrane that separates solutions of the same concentration
Across a semi-permeable membrane that separates solutions of different concentrations
Across a semi-permeable membrane that separates solutions of different concentrations
Across a non-permeable membrane that separates solutions of the same concentration
Across a non-permeable membrane that separates solutions of the same concentration
across a non-permeable membrane that separates solutions of different concentrations
Across a non-permeable membrane that separates solutions of different concentrations
Answer:
it would most likely occur
———————————————————————————————————————
Across a semi-permeable membrane that separates solutions of different concentrations
———————————————————————————————————————
this is because osmosis is the ‘net’ movement of molecules from a ‘region’ of ‘higher concentration’ to a ‘region’ of ‘lower concentration’ ‘down the concentration gradient’.
Which of the following is a true statement about waves?
A.
Waves can transfer energy when they interact with matter.
B.
Waves are never affected when they interact with matter.
C.
All waves require a medium through which they can travel.
D.
All waves travel longitudinally and compressionally at the same time.
Answer:
A.
Explanation:Waves can transfer energy when they interact with matter.
Calculate the mass of an object that has a density of 20 g/mL and a volume of 5 mL.
Answer:
4
Explanation:
density= mass/volume
Answer:
100kg
Explanation:
[tex]density= mass/volume[/tex]
using this formula you can re arrange the equation my moving the volume onto the opposite side
giving you this formula : mass= density x volume
in doing so you can calculate the mass of the object by extracting the relevant information of the question
density=20g/ml
volume=5ml
mass = density x volume
=20 x 5
= 100
Please construct a R.A.C.E. explanation for the prompt below. How do mutations to DNA affect an organism? Name all of the possible ways that an organism could be affected by the mutation and provide examples
Answer:
Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal.
How do atoms and molecules of elements and compounds combine in chemical reactions?
Pls help it is due in 20 mins
Answer:
A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compounds are held together by chemical bonds. A chemical bond is a force of attraction between atoms or ions that share or transfer valence electrons
Answer:
Explanation:
When 2 or more elements combine a compound stats to form. These are held together with a very strong chemical bond (which can vary depends on the elements). This chemical bond makes all of these little ions come to it and thats how a chemical reaction is made.
- Hope you get an A
oh also if you can can I get Brainlist
Hi can someone help me plz! I’m behind on this and I don’t understand
Answer:The atoms you need to build are on the right. You need three colors, and need to say what each color is. Each color should represent a different element.
Explanation:
Answer:
The atoms you need to build are on the right . You need three colors and you need to say what the colors are. Each color should represent a different element.
Explanation:
what is a chemical change of a juicy burger and a waffle fry
there needs to be more info
I need help right now lol,So the question is :During high tide, ocean waves often become larger. If the amplitude of a wave increases by a factor of 4, by how much does the energy increase?
Answer:
1.21 times
Explanation:
The energy of a wave is proportional to the square of the amplitude of the wave.
Mathematically:
e & a²
where
E is the energy of the wave
A is its amplitude
In this problem, the amplitude of the wave increases by a factor of 1.1; it means that the new amplitude can be written as
A=1.1A
Therefore, this means that the energy of the wave increases by a factor:
E' & A'²= (1.1A)² =1.1²A² =1.21A² =
1.21E
Therefore, the energy of the wave increases by a factor 1.21.:
RNA molecules carry amino acids to the ribosomes to begin the work of assembling a protein chain, True or false. explain please
Answer:
True
Explanation:
That is true about RNA