Answer:
A is the answer
Explanation:
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:
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.
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
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:
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.
Learn more about autumn,here:
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a train moving at a velocity of 15 m/s is accelerated to 24 m/s over a 12 second period
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 THESE ARE MY LAST 3 QUESTIONS LEFT AND IM HAVING TROUBLE WITH THEM
1. CH18C20H15CHCO2 How many atoms of each element are in one molecule of cardenolides?
2.How many atoms are in mercury (I) phospate? The chemical formula is (Hg2)3(PO4)2
3.The burning of hexane is shown in the following chemical equation. How many oxygens are in the products to the right of the arrow? 2C6H14 + 19O2 → 12CO2 + 14H2O + heat
Answer:
1)
2)Hg2 3 po4 2
Mercury(I) Phosphate (Hg2)3(PO4)2 Molecular Weight
3)2C6H14 + 19O2 → 12CO2 + 14H2O + heat
Explanation:
i dont know the 1st one i ggoles the 2nd one and it gave me this, hope it helps
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
pls help me i am going to fail my class if u dont help btw this is sice
cause: industrial wasted dumped j to rivers, spread of disease, sewage dumped into rivers
effect: fish die-off, oil spilled on land mixes with runoff, destroyed natural habitats.
note: I can't drag the item. :)
Answer:
:Zzz:
Explanation:
Cause:
Industrial wastes dumped into rivers.
sewage dumped into rivers
oil spilled on land mixes with runoff
Effect:
fish die off
spread of disease
destroyed natural habitats
what is a chemical change of a juicy burger and a waffle fry
there needs to be more info
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
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.
What holds everything in place in the universe?
Answer:
Gravity
Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.
Explanation:
hope this helps
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
