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Related Questions
An athlete runs at an average speed of 9.00 mph. If she wants to complete a distance of 42.19 km, she must jog for ____ x 10^2 min.
Fill in the blank.
Answers
The athlete must jog for approximately 1.7479 × 10² minutes to complete a distance of 42.19 km at an average speed of 9.00 mph.
To find the time the athlete must jog, we'll first convert the distance from kilometers to miles, then use the formula:
Time (in hours) = Distance ÷ Speed
1 kilometer is approximately 0.621371 miles.
So, the distance in miles is:
42.19 km × 0.621371 miles/km ≈ 26.21875 miles
Now, we can find the time in hours:
Time (in hours) = 26.21875 miles ÷ 9.00 mph ≈ 2.9131944 hours
To convert hours to minutes, multiply by 60:
Time (in minutes) ≈ 2.9131944 hours × 60 min/hour ≈ 174.79167 minutes
Now, let's round this to two decimal places and express the result in scientific notation:
Time (in minutes) ≈ 174.79 minutes
To write it in the requested form (using scientific notation), we move the decimal point two places to the right:
Time (in minutes) ≈ 1.7479 × 10 minutes
So, the athlete must jog for approximately 1.7479 × 10² minutes to complete a distance of 42.19 km at an average speed of 9.00 mph.
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What is the funtion of the lungs in the respiratory system? (Use complete sentences.)
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Answer:
The lungs' main role is to bring in air from the atmosphere and pass oxygen into the bloodstream. From there, it circulates to the rest of the body. Help is required from structures outside of the lungs in order to breath
Explanation:
Explanation: The lungs are the most important part of the respiratory system. They give air to serve the whole entire body. Lungs are one of the most vital organs of the body, since they help us breathe, and if we did not breathe, we would die.
Hope this helps you!
The amount of matter in a given space or volume
Answers
In the given question, the amount of matter in a given space or volume is called density.
Matter is defined as any substance or anything that has mass, and which occupies space.
Density is a physical property of matter and can be defined as the mass of an object divided by its volume. Density has unit typically in grams per cubic centimeter (g/cm³) or kilograms per cubic meter (kg/m³).
It is an important property of matter because it helps to identify and distinguish different materials based on their mass and volume.
Therefore, density is the amount of matter in a particular region or volume.
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Choose the abiotic factors that characterize the tundra biome.
Warm, wet forests
Very little rainfall, extreme temperatures
Arctic foxes, snowy owls, wolves
Very low temperatures, very little precipitation
Answers
HELP i will give crown and 15 points
Based on the chemical equation provided, use the drop-down menu to choose the coefficients that will balance the chemical equation.
(__)H2 + (__)O2 → (__)H2O
1 1 1
2 2 2
3 3 3 It's gives 123 for all of the choices
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Answer:
Sorry i cant see this question
Explanation:
Sorry
⚠️An irregular piece of iron has a mass of 78.7 grams. When placed in a graduated cylinder with 30 mL of water, the water rises to the 35 mL ⚠️
Answers
Answer:
The density of the iron is: 15.74g/cm3
Explanation:
-To determine the density of something, you have to divide the mass and the vol.
-mass/volume = density or, m/v = d
-The mass of the iron is: 78.7 grams
-The volume of the iron is 5mL
In order to find the density, you have to divide:
m/v = d
78.7g ÷ 5mL = 15.74
Hope This Helps (:
Please help It is due today
only the second, third, and forth one
Answers
Answer:
why is this still up 2 years later
Explanation:
3. How do plants benefit from human respiration?
A. Plants need oxygen to survive
B. Plants need water to survive
C. Plants need carbon dioxide to survive
D. Plants need nitrogen to survive
Answers
Why:
A - this is natural
B - water is natural
D - this is also natural
C- this is right because when we breathe out we produce more carbon dioxide then we breathed in.
I’ll give branliest to the best answer! Thanks!
Answers
To investigate how mechanical energy affects the number of times a ball will bounce back, Maria dropped a ball from three different heights. Which of the following would be a reasonable conclusion from this experiment?
The height from which a ball is dropped does not affect the number of times it bounces.
Increasing the height will give the ball more energy and will increase the number of times it bounces.
Increasing the height will give the ball less energy and will decrease the number of times it bounces.
Decreasing the height will give the ball more energy and will increase the number of times it bounces.
Answers
Answer:
C. Increasing the height will give the ball more energy and will increase the number of times it bounces.
Explanation:
Which term is described as a shelf of undersea land reaching a depth of about 200 meters (656 feet) and extending out from the shoreline?
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How adding tin to copper makes the bronze alloy harder?
Answers
Match the term with its description.
Match Term Definition
Acid A) A value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
Alkaline B) An atom or molecule that has a positive or negative charge
pH C) A compound that increases hydrogen ions (H+) when it is dissolved in a solution
Ion D) A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution
Answers
Answer:
An acid is a compound that increases hydrogen ions (H+) when it is dissolved in a solution.
The term alkaline is related to compound that increases the hydroxide ions (OH−) when it is dissolved in a solution.
pH refers to a value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water
An ion is an atom or molecule that has a positive or negative charge.
Explanation:
Answer:
Acid A) A compound that increases hydrogen ions (H+) when it is dissolved in a solution.
Alkaline B)A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution.
pH C) value from 0 to 14 that is used to specify how acidic or basic a compound is when it is dissolved in water.
Ion D) n atom or molecule that has a positive or negative charge.
Explanation:
What are the main causes of convection currents in the asthenosphere?
pls answer to be marked brainliest pls! I have only 31 minutes left not on a test though but pls answer
science class grade 6
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How do sound waves move?
In a straight line
In small circles
Up and down
Towards the ground
Answers
A compound is the chemical bonding of what
Answers
Answer:
A compound is a molecule made of atoms from different elements
Explanation:
All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.
Who do you think should be responsible for cleaning up all the space junk orbiting the earth? Please I really really needed help
Answers
Answer:
Every spacefaring country.
Explanation:
Space junk is no one countries' responsibility, but the responsibility of every spacefaring country. The problem of managing space debris is both an international challenge and an opportunity to preserve the space environment for future space exploration missions.
Hope this helps
Taken from google :/
Describe the composition of each layer: Crust, mantle, outer core, and inner core all separate please it is worth 5pts x (this means 10 pts)
Subject: Earth Science
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Answer:
crust-Silicate rocks
mantle- Silicate rocks rich in iron and magnesium
Ultramafic rocks
outer core- A layer of molten iron and nickel
inner core- solid iron and nickel
Explanation:
Help me plz <3 I need an answer right now!!!
Answers
Answer:
its b watch
Explanation:
They already know the distance if they know the time then they can find their speed. For example Mph is miles per HOUR therefore all they need is distance and time
Would the car be able to travel all the way through the track of the roller coaster shown below? Why or Why not?
Yes, because there is enough Potential Energy at Point 1 to make it all the way through point 5.
Yes because there is enough Kinetic Energy at Point 1 to make it all the way through point 5.
No because there is not enough Potential Energy at Point 1 to make it all the way through point 5.
No because there is not enough Kinetic Energy at Point 1 to make it all the way through point 5.
Answers
Answer:
No because there is not enough Potential Energy at Point 1 to make it all the way through point 5.
Explanation:
Answer:
So first its common sense lol. So of course it would be enough Potential energy to go up excample like a bow-n-Arrow it goess up then down because of Gravity!!!!
Hope this hellped even though someone else said the same answer XD
Two processes are described below: Process A: rapid moving water strikes a rock on the bottom of a stream and breaks it into pieces Process B: glaciers moving along a rocky surface form cracks in the rocks
which statement is true about the processes?
both represent physical weathering
both represent chemical weathering
Process a is physical weathering in process B is chemical weathering
process a is chemical weathering and process B is physical weathering
Answers
Answer:
both represent physical weathering
Explanation:
Answer:
B. both represent physical weathering
Explanation:
I did the test
Pls help meh......Due at 3:00
What type of elements bond covalently?
What are two covalently bonded atoms called?
When drawing an electron dot structure, should you pair up as many electrons as you can around their original atom or should you leave them single?
How does this help you discover how many bonds they will form?
If a molecule has a triple bond, how many pairs of electrons does it share? How many total electrons is that?
What is a molecular compound?
What are properties of molecular compounds?
Why are molecular compounds poor electrical conductors?
How do bonded atoms become partially charged?
What is a nonpolar bond?
What is a polar bond?
Do you think water in the Dead Sea would conduct electricity? Why?
Answers
Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.
Explanation:
Which of the following is considered a standard unit of length in the United States?
A:square inch
B:cubic yard
C:yard
D:acre
Answers
Answer:
yard
Explanation:
Answer:
c
Explanation:
Can anyone help me with these science questions?
1. What is collision theory?
2. How does collision theory relate to factors that affect reaction rate?
3. Define reaction rate.
4. List factors that influence the rate of a chemical reaction.
5. Choose one of the factors you listed in your answer to question 2, and explain how it affects reaction rate.
Answers
Answer:
This is where google becomes your best friend but I got you
Explanation:
1. A theory used to predict the rates of chemical reactions, particularly for gases. The collision theory is based on the assumption that for a reaction to occur it is necessary for the reacting species (atoms or molecules) to come together or collide with one another.
2. Collision theory says that chemical reactions occur by the collisions between atoms and molecules, so the more collisions the faster the rate of the chemical reactions.
3. The speed at which a chemical reaction proceeds. It is often expressed in terms of either the concentration (amount per unit volume) of a product that is formed in a unit of time or the concentration of a reactant that is consumed in a unit of time.
4. There are four main factors that can affect the reaction rate of a chemical reaction:
Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...
Physical state of the reactants and surface area. ...
Temperature. ...
Presence of a catalyst.
Answer:
1. a theory that says a chemical reaction takes place when particles of the reactants collide with sufficient energy to initiate the reaction
2. Increasing the concentration of the reactants, the faster the particles will collide so the reaction rate will be faster
3. a measure of how fast a reaction takes place
4. Temperature, presence of a catalyst, reactant concentration, surface area
5.
Explanation:
not sure how to do number 5 sorru
What do cuticles do for land plants that were not necessary for ancestors that lived in the water?
Cuticles allow them to grow bigger and taller.
Cuticles help them transport water.
Cuticles help prevent water loss.
Cuticles allow the performance of photosynthesis.
HELP PLS AND THX
Answers
Answer:prevention of water loss would be unnecessary
Explanation:
edge 2021
Cuticles are protective lining in the epidermal layer of plants. Cuticles helps to reduce water loss and protect the plants from environmental stresses.
What is cuticles?Cuticle is an organism's external layer or area that makes touch with the environment. The epidermis secretes the dead, noncellular cuticle in many invertebrate species. In humans, the cuticle is the epidermis, and this layer may include colours and chitin, similar to arthropods.
The cuticle is a protective coating that protects the epidermal cells of leaves and other organs while preventing water loss in some higher plants.
It is made up of cutin, a waxy, water-repellent compound related to suberin that is present in the corky tissue's cell walls. Hence, option c is correct.
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What is your carbon footprint?
A: the amount of carbon dioxide you use when recycling
B: the amount of oxygen put into the atmosphere due to your consumption of fossil fuels
C: the amount of carbon dioxide and oxygen in the atmosphere at any given time
D: the amount of carbon dioxide put into the atmosphere due to your consumption of fossil fuels
Answers
Answer:
D
Explanation:
According to WHO, a carbon footprint is a measure of the impact your activities have on the amount of carbon dioxide (CO2) produced through the burning of fossil fuels and is expressed as a weight of CO2 emissions produced in tonnes.
How does sound energy travel?
By sound circles
By sound drums
By sound lines
By sound waves
Answers
Answer:
I think its By sound waves..
Hope you have a blessed day!
Carbon atoms in diamond are arranged in connecting cubes. Carbon atoms in charcoal are arranged more randomly. Using the names of the structures a solid can have, describe the differences between these forms of carbon.
Answers
Answer: Charcoal is the charred product from pyrolyzing wood. Charcoal is a porous material that can burn or adsorb pollutants, carbon atoms in diamond are arranged in the same way something in the solid state of matter would be arranged- like building blocks. if the carbon atoms in charcoal are arranged more randomly but still close
together, thats similar to the way a liquid would look!
Answer:
The carbon atoms in diamond are arranged like building blocks in the solid state of matter, whereas the carbon atoms in charcoal are arranged more randomly but still close together.
ok GUYS out there answer this
can u guys ask me a ques. that your to afraid to ask to a girl
Answers
Explanation:
Usually it's being afraid of getting rejected but your just afraid of being yourself
Answer:
im not afraid
Explanation:
9. Mixing baking soda and vinegar leaves behind water and salt. This is an example of mixing ________ and __________. Is it a chemical or physical reaction?
Answers
Answer:
Mixing baking soda and vinegar is a chemical reaction. I’m not so sure about the fill in the blanks.
Explanation:
It is a chemical change due to the formation of gas and the change in temp.