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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Please help I need an answer like RIGHT NOW!
Answer:
for what nothing is heree??????????? <3
Explanation:
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
Which form of energy is used as a roller coaster moves down the track?
a roller coaster moving down a track
Chemical energy
Light energy
Mechanical energy
Solar energy
Answer:
Mechanical energy
Explanation:
PLEEAASSEE HEELLPP MEE I NEED THIS ANSWER TO FINISH THE LAST QUESTION!!!!
Answer: Elements or compounds that enter are Reactants.
The substances that are formed are the Products
Reactants in C6H12O6 + 602 ---> 6CO2 + 6H2O are C₆H₁₂O₆ + 6 O₂
Reactants in 6 CO2 + 6H2O --->C6H12O6 + 602 are 6 CO₂ + 6 H₂O
Reactants in 2 H2 +O2 ---> 2 H2O are 2 H₂ +O₂
Reactants in 2 H2O ---> 2 H2 + O2 are 2 H₂O
Explanation:
The number of atoms in the reactants have to balance with the number of atoms in the products.
The first two examples given are for metabolism of carbohydrates (similar to combustion of hydrocarbons) and photosynthesis.
EASYYYYYYYYYYY
Mixing baking soda with vinegar causes a chemical change. What is the evidence that chemical energy has been released during this process?
The color of the mixture looks white.
The baking soda and the vinegar disappear.
The vinegar and baking soda form a mixture.
The temperature of the mixture changes.
Answer: The vinegar and baking soda form a mixture.
Explanation:
In your own words (Please don't search it up, and don't answer if you don't know.)
Please tell me the meaning of Outcome Variable and Test Variable
Thank you!
Answer: An outcome variable is a variable that is the final or missing variable in an experiment and a test variable is a variable that is being tested to find the final variable or missing variable (The outcome)
Explanation:
how do i find the formal of newtons third law
Answer:
Newton's third law is: For every action, there is an equal and opposite reaction.
Explanation:
FA = −FB. if one object A exerts a force FA on a second object B, then B simultaneously exerts a force FB on A, and the two forces are equal in magnitude and opposite in direction
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
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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MARK BRAINLIEST AND 14 POINTS
Answer:
She could prove that it is a combination of substances by looking for a change in color, or the formation of bubbles. She could also try to pull the combination apart by physical means alone.
Explanation:
Answer:
If it's a mixture she could pull it apart bit by bit, but she can't so it's chemical..
Explanation:
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?
Answer: most molecular compounds poor conductors because they do not have charged particles to carry current.
Explanation:
How adding tin to copper makes the bronze alloy harder?
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
Answer:
yard
Explanation:
Answer:
c
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?
⚠️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 ⚠️
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 (:
Explain the kinetic energy of the particles in each of the 3 main states of matter.
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
Answer:
both represent physical weathering
Explanation:
Answer:
B. both represent physical weathering
Explanation:
I did the test
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
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?
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.
For substances are involved in both photosynthesis and cellular respiration. They are sugars, water, oxygen, and carbon dioxide. Describe what happens to these four substances during photosynthesis.
Write your response below
Answer:
Carbon dioxide and water enter the plant while sugars and oxygen are released into the atmosphere.
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
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:
I’ll give branliest to the best answer! Thanks!
TIMED TEST!!
The product side of a chemical reaction is shown.
→ 7Ti2(SO4)3 What number is the coefficient
The amount of matter in a given space or volume
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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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
A compound is the chemical bonding of what
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.
Which phrase gives two processes scientists think move the Earth's lithospheric plates?
pls answer correctly to earn Brainliest
science class btw