One type of bacteria reproduces once every 60 minutes. If there are 2 bacterial cells to begin with, then after 4 hours there will be a total of _____ bacterial cells.
Answers
Solving by the method of exponential growth.
bacteria = 2
after one hr = 2² = 4
after 2nd hr = 2³ = 8
after 3rd hr = 2⁴ = 16
after 4th hr = 2⁵ = 32
Answer:
96
Explanation:
Related Questions
Compare and contrast how observations and results can be used to support a conclusion to an experiment.
Answers
Answer:
Difference between Observation and Results:While performing any ex
Explanation:
Judging from the diagram, which of the following statements is true?
A. Sound travels at the same speed through both cold and warm air.
B. Sound travels faster through cold air than through warm air.
C. A sound wave's wavelength shortens when it travels from cold air into warm air.
D. Sound travels faster through warm air than through cold air.
Answers
Answer: D, sound travels through warm air faster than cold
Explanation:
Molecules move faster and transmit more sound vibrations in warm air.
Which type of front occurs when cold air and warm air are next to each other, but are at a standstill?
warm front
stationary front
cold front
occluded front
Which is it? grade 6 science class, pls help me, thank u, I'm sure I'm the lowest grade on Brainly so yeah this would be easy for you lol. l m a o!!!! ;) thx
Answers
Which two statements best describe how oceans affect climate?
A.They have warm and cool currents that affect weather on nearby land.
B.They have warm and cool currents that move the air masses above them.
C.They make temperatures in nearby areas slightly colder than freezing
D.They make temperatures in nearby areas slightly milder.
Please help asap
Answers
The effects of climate on ocean are:
A.They have warm and cool currents that affect weather on nearby land.
D.They make temperatures in nearby areas slightly milder.
Climate type of the ocean:As ozone harming substances trap additional energy from the sun, the seas are retaining more hotness, bringing about an expansion in ocean surface temperatures and climbing ocean level. Changes in sea temperatures and flows achieved by environmental change will prompt modifications in environment designs all over the planet.
Thus, options A and D are correct.
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Which statement describes how pioneer species and climax communities are different?
A. Pioneer species tend to have large body sizes, and climax communities contain species with only small body sizes
B. Pioneer species mark the end of succession, and climax communities mark the beginning
C. Primary species have many species types, and climax communities have few species
D. Primary species have large numbers of offspring, and climax communities contain species that have small numbers of offspring
PLEASE HURRY!!!!!!!!!!!!! God bless all! :)
Edited at 12:55 p.m.: I found the answer so if you still want points just put down whatever you want to. Nothing mean though. Thanks and God bless
Answers
Explanation:
thaks!!!!!!!!!!!!!!!#!
PLEASE HELP ILL MARK BRAINLEST
Record your data either in your lab notebook or in the space below.
Table A. Predictions of Kinetic Energy and Resulting Beanbag Height for Varying Masses
Mass
(kg)
Velocity
(m/s)
Kinetic Energy
(kg∙m2/s2)
Height of Beanbag
(m)
Average Height of Beanbag
(m)
0.125
0.250
0.375
0.500
Observations
Answers
Answer:
Answer:
0.35
0.91
1.26
1.57
Explanation:
did it on edge
Answer:
Hey lol, not sure why my answer got deleted and why I got warned but regardless of the reason, the answer should be: 0.35, 0.91, 1.26, 1.57
Explanation:
I did it yesterday on e d g e n u i t y
A candle burning is an example of _____. an exothermic change an endothermic change a physical change energy being taken in
Answers
Answer:
chemical change
Explanation:
it is turning into a different substance as it burns
ur welcome
the process of burning is a chemical reaction, which would occur in a chemical change
Make an observation about the average height of the beanbag. How does it compare with your calculated kinetic energies for each speed? Does the height of the beanbag increase in equal increments with each step up in speed? Record these qualitative observations in Table B.
Answers
Answer: The kinetic energy in the solid and liquid phases is the same. The kinetic energy of the substance's particles will depend on the volume of the substance. The particles have less kinetic energy in the liquid phase than they do in the gas phase. They vibrate so quickly that the particles ionize and become plasma.
Greenhouse gases in the atmosphere trap
A.solar energy leaving Earth.
B.infrared energy leaving the sun.
C.solar energy near Earth's surfaces.
D.infrared radiation leaving Earth.
Answers
Explanation: the light energy is from the sun which other than light energy, is equal to solar energy, confirming that the answer is C
If 12.4 mol of Ne gas occupies 122.8 L, how many mol of Ne would occupy 339.2 L under the same temperature and pressure? Record your answer in scientific notation using 3 significant figures.
Answers
Answer:
3.43×10¹ mol
Explanation:
Given data:
Initial number of moles = 12.4 mol
Initial volume = 122.8 L
Final number of moles = ?
Final volume = 339.2 L
Solution:
The number of moles and volume are directly proportional to each other at same temperature and pressure.
V₁/n₁ = V₂/n₂
122.8 L/ 12.4 mol = 339.2 L / n₂
n₂ = 339.2 L× 12.4 mol / 122.8 L
n₂ = 4206.08 L.mol /122.8 L
n₂ = 34.3mol
In scientific notation:
3.43×10¹ mol
Calcium has a charge of +2. The chart lists the charges of different ions.
Which are possible equations for an ionic compound with calcium?
CaO, CaMg, or CaF2
Ca2Cl, CaNa, or CaP
CaF, CaMg, or CaNa
CaO, CaF2, or CaCl2
Answers
Answer:
I think it is
Ca2Cl, CaNa, or CaP
Explanation:
Explain: Hope this helped!
the color of a mineral is powdered form
a. luster
b.streak
c.hardness
science i need help please
Answers
Answer: Streak
Explanation: The color of a mineral in powdered form is called the mineral's streak. To find a mineral's streak, the mineral is rubbed against a piece of unglazed porcelain called a streak plate. The mark left on the streak plate is the streak.
The streak of a mineral is its powder's color, because streak does not vary, it is a more dependable quality than color. Minerals of the same color may have a streak of a different hue, hence option B is correct.
The streak of a mineral refers to the color of the material when it is in powdered form. A streak plate is an unglazed piece of porcelain that is used to locate a mineral's streak. The streak is the mark that was left on the streak plate.
When minerals are powdered, they often take on a distinct hue than when they are in crystal or massive form. It might be a completely different tint or a completely different color.
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help pls match allll
Answers
1-B
5-C
4-D
3-E
I hope this helped:)
A graph with horizontal axis time (seconds) and vertical axis position (meters). An orange line runs straight upward from 0 second zero meters. A concave blue line runs upward from the same point. Maia says that both lines on this position vs time graph show acceleration. Is she correct? Why or why not?
Answers
Answer:
Let's start by using the definition of acceleration. Acceleration is defined as the change in velocity over the change in time. In equation, that would be Δvelocity/Δtime. Based on the axes of the given graph, it shows the trend of position over time. So, the slope of the line and the curve shows the change of position over change of time, Δdistance/Δtime. In physics, this is the definition of speed or velocity. So, Maia is incorrect. Both curves show the speed or velocity of the object, and not acceleration. If the graph used a y-axis of velocity instead of position, then only at that instance, would be Maia be correct.
The difference between the two is, the straight line shows constant velocity while the curve line shows changing velocity.
Explanation:
Maria is incorrect because the line or curve shown in the graph gives value of velocity not of acceleration.
What is acceleration?Acceleration of any object is dfine as the rate of change in velocity with respect to the distance.
According to the question, graph is plotted between time and distance so slope of the graph gives the value of change in position with repect to the time and this is used to define velocity as:
v = dx/dt
So, maria is incorrect.
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4) Finish the analogy related to atoms and matter:
atom is to element as_________________ is to compound
AND letter is to ____________________
Answers
And letter is to word
And letter us to word
Why does salad become soggy and wilted when the dressing has been on it for a while? Explain why, in terms of osmosis. PLS HELP FAST!
Answers
What is a half-life of an isotope? please help
Answers
Answer:
Explanation:
Hello! Hope this helps!
One important measure of the rate at which a radioactive substance decays is called half-life, or t1/2. Half-life is the amount of time needed for one half of a given quantity of a substance to decay. Half-lives as short as 10–6 second and as long as 109 years are common.
A leaf on a tree stars moving when the wind blows on it how is this an example of newton's first
A. the wind exerts a force on the leaf causing its motion to change
B the wind exerts no net force on the leaf because it is not a push or pulls
C. the leaf stops moving even though the wind continues to blow
Answers
Please help!
1.Ionic compounds are formed when.
-metal reacts with non metal
-metal reacts with metal
-when non-metal reacts with non-metal
2.True or false. Ionic bonds are electrostatic forces.
-True
-False
3.Sodium loses one electron when it reacts with.
-Magnesium
-potassium
-Chlorine
Answers
2- true
3- chlorine
2. true
3. chlorine
The mass of the electron is..
A) about equal to the neutron
B) almost the same as the proton
C) very small compared to the proton
D) very large compared to the neutron
Answers
Can someone help me like please
Answers
Answer:
the last one
Explanation:
one atom had a higher electronegativity than the atom it is sharing with.
At STP a gas occupies a 26.4 kiloliter balloon. How many mol of the gas must be in the balloon? Answer as a whole number.
Answers
Hello!,I'm Lyo, and I'm a Brazilian teacher.
this gas is hydrogen.
Molar mass (M.M): stp = 22.71 Mol/liters
good studies for you!
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)
The manual is a gene.
The manual is a chromosome.
Each set of instructions is a protein.
Each structure is a gene.
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?(1 point)
The manual is a gene.
The manual is a chromosome.
Each set of instructions is a protein.
Each structure is a gene.
Answers
Answer:
Explanation:The manual is a chromosome.
If the given scenario is used as a model for genetic information, then "the manual is a chromosome" is the correct statement. Therefore, option (B) is correct.
What is a chromosome?A chromosome can be defined as a long nucleotide sequence that consists of linear arrangements of genes. In a chromosome, each DNA strand comprises a nucleotide sequence that can encode proteins that are different genes.
The human body has 23 pairs of chromosomes and this unique structure of the chromosome does DNA tightly packed with histone proteins to fit in the cell and helps in giving stability to it. The unwound DNA of a single cell measures 6 feet, with this we can understand the need for packaging in the nucleus of each cell.
Chromosomes can be seen in cell division as they ensure that DNA will be divided between the daughter cells in the cell division. Even a little irregularity in the process can cause many deformities and diseases.
A chromosome can be considered as manual containing instructions for how to build various types of structures using a set of interlocking bricks means nucleotides.
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Please help like please
Answers
. What units would you use to measure a red blood cell?
1. Nanometers
2. micrometers
3. millimeters
Answers
Answer:
nanometers im guessing :<
Explanation:
Many photographers take pictures of scenety. Below is a sample of a popular technique that they use. The technique captures a picture of the mountains and the sky in the water. Identify which property of light is being demonstrated in this technique.
A. interference
B. water colors
C. refraction
D. reflection
Answers
The property of light being demonstrated in the picture is reflection of light.
What is reflection?Reflection of light is defined as a property of light ray that when it strikes a smooth surface it bounces back .Objects can be seen due to this property of light.Reflection is produced by all types of waves namely sound waves, light waves, electromagnetic waves.
Reflection of light is governed by laws of reflection which are also called as Snell's laws. According to laws of reflection, angle of incidence and angle of reflection are equal.The incident ray , reflected ray and normal all lie on the same side of the plane.Light travels in a straight line before, after and during the process of reflection.There are 3 types of reflection which are diffuse reflection,specular reflection and glossy reflection.
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A student is pulling a large recycling bin. A teacher fills it with old papers to recycle. What property of the bin changes, and in what way? What does the student have to do to keep the bin moving at the same speed?
Answers
Answer:
the mass use his or her force to keep it at the same speed
Explanation:
The table shows data collected on the growth rate of a fruit fly population.
What conclusion does the data support?
The population of fruit flies will continue to grow after 45 days pass.
The population of fruit flies reaches the carrying capacity at 35 days.
The death rate of fruit flies is greater than the birth rate of fruit flies at 40 days.
A disease enters the population at 35 days and prevents population growth.
Answers
Answer:
The population of fruit flies reaches the carrying capacity at 35 days.
Explanation:
hope this helped!
The table shows data collected on the growth rate of a fruit fly population of fruit flies reaches the carrying capacity at 35 days. Option B is correct.
What is a fruit fly?The scientific name of the fruit fly is Drosophila melanogaster and can also be known as the tiny pest which reproduces very quickly and in a large mass f population and is disease-causing.
The name is given to her fruit fly because it mainly damages or spoils the fresh fruits and vegetables that if cannot be washed properly before eating can cause a defect in human health and harm humans.
Therefore, Option B is correct, table shows data collected on the growth rate of a fruit fly population of fruit flies reaches the carrying capacity at 35 days.
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Please help y’all I don’t understand
Answers
Answer:
the last one
Explanation:
PLSS HELP ME! Read each statement below and decide if you agree or disagree. Write Agree or Disagree below each statement, based on your decision.
1. Temperature is the measurement of how hot or cold something is.
2. When something heats up, new energy is created, and when something cools down, energy is destroyed.
3.When something heats up, it moves faster, and when something cools down, it moves slower.
4. Hotter things have more energy than colder things.
Answers
Answer:
1. Temperature is the measurement of how hot or cold something is.
agree
2. When something heats up, new energy is created, and when something cools down, energy is destroyed.
disagree
3.When something heats up, it moves faster, and when something cools down, it moves slower.
agree
4. Hotter things have more energy than colder things.
agree