Answer:
measures in an experiment
The independent variable is also defined as the regressors or controlled variable. It is the variable which is thought to be the cause of some effect. The independent variable is the only factor that a scientist varies for different groups in an experiment. The correct option is A.
An independent variable is defined as the variable which is changed or controlled in a scientific experiment in order to study the effects on the dependent variables. It is known as the quantity which is being manipulated in an experiment.
Thus independent variable is option A.
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Why do you think the placebo effect works
Answer:
The placebo effect is when an improvement of symptoms is observed, despite using a nonactive treatment. It’s believed to occur due to psychological factors like expectations or classical conditioning.
Research has found that the placebo effect can ease things like pain, fatigue, or depression.
hope this will help u :)
when a human female reaches a certain as then vaginal bleeding occurs for a few days after regular intervals of time:
(a) what is this process known as (i) in scientific terms, and (i) in everyday language?
(b) what is the human female sad to have attend at this stage?
(c) what does the onset of this process in human female signify?
(d) at what particular event in the life of a human female this process stops temporarily but starts again?
(e) what name in given to the event when this process stop permanently?
a) Mentruastion in Sciencetific Terms.
Periods in Everyday Language.
b) Well, yea Sad. It's an Awful Period in Life, I mean, There are Certain Restriction That Needs to be Followed during that time. it's not easy..
c) "Sexual Maturity" in Human Female Body.
d) During Pregnancy it stops Temporarily and Continues after That.
e) Menopause is the name Given For the Event to stop Permanently. usually at the age of 40-45.
_______________________________
This Particular Event is Common in all Females, we undergo this Stage at 10-12.
[tex] [/tex]
Answer:
Hii dear.....wnt be my frnd???
A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The INDEPENDENT variable is *
5 points
the size of the baby alligators
the temperature
the incubator
the gender of the alligator
Answer:
The temperature of the incubator.
Explanation:
The temperature of the incubator would be the independent variable in this scenario because it is what controls the dependent variable. The gender of the alligator depends on the temperature of the incubator.
hope this helps!
A sample of metal has a mass of 10.5 grams and a volume of 1.21 cm cubed. What is the density of the metal?
Answer:
[tex]\boxed {\boxed {\sf 8.68 \ g/cm^3}}[/tex]
Explanation:
The density of a substance is its mass per unit volume. The formula for calculating density is:
[tex]\rho= \frac{m}{v}[/tex]
The mass of the sample of metal is 10.5 grams. The volume of the sample of metal is 1.21 cubic centimeters.
m= 10.5 g v= 1.21 cm³Substitute these values into the formula.
[tex]\rho= \frac{ 10.5 \ g }{ 1.21 \ cm^3}[/tex]
Divide.
[tex]\rho= 8.67768595 \ g/cm^3[/tex]
The original measurements of mass and volume have 3 significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place. The 7 in the thousandth place (8.67768595) tells us to round the 7 up to an 8.
[tex]\rho \approx 8.68 \ g/cm^3[/tex]
The density of the metal is approximately 8.68 grams per cubic centimeter.
The following data was collected for a runner's speed: 4mi/hr, 3mi/hr, 6.9mi/hr, and 7mi/hr. Is this data precise
The data collected is not precise.
In science, we define precision as the degree to which scientific measurements yield results having close range of values.
A precise data set has values that are very close to each other.
In this case the values; 4mi/hr, 3mi/hr, 6.9mi/hr, and 7mi/hr are not close to each other.
Therefore, the data set is not precise.
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which is an example of a polymer?
A. Diamond
B. Cellulose
C. Sodium Chloride
D. Carbon Monoxide
Answer:
diamond
Explanation:
helppppp I’ll brainlist
Answer:
Chloroplast
Explanation:
The chloroplast is the green Pigment in the skin that gives the leaf its color.
fill in the blank
7.95 x 10^7 = ? x 10^6
[tex] \large \mathfrak{Answer : }[/tex]
[tex]7.95 \times 10 {}^{7} = \boxed{79.5} \times 10 {}^{6} [/tex]I hope it helped...
Answer:
correct answer is 7.95*10^7=79.5*10^6
Which of the following describes the expected solubility of benzoic acid?
O Because it is an acid, it should be soluble in aqueous acids
O Because it is an acid, it should be soluble in aqueous bases
O Because it is an acid, it should be soluble in water
O Because it is an acid, it should be soluble in hexane
Why type of data must be plotted on a graph for the slope of the line to represent density?
Answer:
you need data that has at least one independent variable in order to plot a graph for a slope of the line
Explanation:
22 °C to K (approximate room temperature)
Answer:
295.15 i think
Explanation:
1. What is Science?
A. The goal of science is to investigate and understand the natural world, to explain events in the natural
world, and to use those explanations to make useful predictions.
Help please it’s confusing to me
Answer:
B, H, E, G, C, D, A, F
Explanation:
The ones closest to the bottom are the oldest
When students observed boiling water, they noticed the temperature increased. What conclusion could they draw from this observation? (1 point)
The average kinetic energy decreased.
The average kinetic energy remained the same.
ОООО
The molecular motion decreased.
The molecular motion Increased.
Answer:
the molecular motion increased. hope this helps
Explanation:
- Zombie
The conclusion that could they draw from this observation is that molecular motion increased. The correct option is D.
What is motion?
Motion is changing the position of an object when any force is applied to it. Motion means the object is moving. The motion of molecules means the molecules of an element are moving. This happens due to an increase in temperature.
Boiling is the term for the process of a liquid turning into a gas when heated to a constant temperature. The molecular motion is controlled by the kinetic energy of the molecules.
The kinetic energy of liquid molecules increases with heating. These molecules begin to move faster and farther apart. So the conclusion will be molecular motion.
Thus, the correct option is D. The molecular motion increased.
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PLS I NEED HELP
The distance from the Sun to Mercury is 3.598 • 10^7
miles. The distance from the Sun to Neptune is
2.798. 10^9 miles. How far is Mercury from Neptune?
Write your answer in scientific notation.
Answer:
4.44309 × 109 ( 4443090000 kilometres )
2.760936126 × 109 ( 2760936126 miles)
Please make me the brainliest! !!
Answer:
The distance of Mercury to Neptune = The distance from sun to Neptune - The distance from sun to Mercury
= 2.798 . 10^9 - 3.598 . 10^7
= 2.798 . 10^9 - 0.03598 . 10^9
= 10^9 ( 2.798 - 0.03598 )
= 2.76202 . 10^9 miles
.
.
Hope it helps
1) Convert 300 cm3 to L
Answer:
300 Cubic Centimeters x 0.001 = 0.3 Liters
Answer:
Answer is 0.3 litre.
Explanation:
1 cm^3 = 1/1000 L
300 cm^3 = 300/1000 L
= 0.3 L answer.
Can someone do this for me? Pleaseeeee I’m very busy.
The directions tell you what to do.
Answer:
in number 7 its Gas because the molecules are afloat and/or moving rapidly.
Explanation:
What is the frequency for electromagnetic radiation with a wavelength of 3.10x10^-7 m?
Answer:
I have the same thing it's hard
A Cylinder has a diameter of 20 m and a height of 100 cm.
A. 12.56 m^3
B. 314 m^3
C 1256 m^3
D 2000 m^3
Answer:
d
Explanation:
cylinder has a diameter of 20 m and height of 100 cm is 2000mcube
Answer: 314 m^3
Explanation: V = πr²H
H = 1 meter (100cm = 1 meter)
R = 10 meters
V = (3.14)(10m)²(1m)
V = 314 m³
Describe the process of making the four major macromolecules.
Answer:
Proteins, carbohydrates, nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers.
Explanation:
Have a great day!
Answer:, , nucleic acids, and lipids are the four major classes of biological macromolecules—large molecules necessary for life that are built from smaller organic molecules. Macromolecules are made up of single units known as monomers that are joined by covalent bonds to form larger polymers. I forgot to add carbohydrates and proteins also my bad
i just started learning aboit this too
Explanation:
For energy calculations, height must be measured in the unit of *
The diffrences between wood and stone
Wood:
Wood comes from trees, that are growing out of the ground, but not TECHNICALLY part of the earth.
Stone:
Stone is a part of the earth, created by a lot of minerals combining, and molten rock hardening a LOOOOOOONG time ago.
Why are scientists interested in learning more about dark matter
Answer:
Dark matter and dark energy raise some of the biggest questions in the study of space and physics. Lots of scientists are using observations and math to figure out what these are. This will help us understand more about our amazing universe, where there is always more to discover and more to learn.
Some of the most important concerns in the study of space and physics are raised by dark matter and dark energy. Many scientists are utilizing math and observations to determine what they are.
What is dark matter?
Dark matter is a part of the cosmos that can only be detected by its gravitational pull, not by its brightness. The universe's matter-energy ratio is made up of 30.1 percent dark matter, 69.4 percent dark energy, and "regular" visible matter (0.5 percent).
The existence of dark matter also referred to as the "missing mass," was first suggested by Swiss-American astronomer Fritz Zwicky, who found that the mass of all the stars in the Coma cluster of galaxies only made up about 1% of the mass required to prevent the galaxies from escaping the cluster's gravitational pull in 1933.
Until the 1970s, when American astronomers Vera Rubin and W. Kent Ford observed a similar phenomenon, the existence of this missing mass was unknown. At that time, the mass of the stars visible in a typical galaxy was only about 10% of the mass needed to keep those stars orbiting the galaxy's center.
Generally speaking, the rate at which stars circle the galactic nucleus is independent of how far away from the nucleus they are; in fact, orbital velocity either remains constant or slightly rises with distance instead of decreasing as would be predicted.
This requires a linear relationship between the mass of the galaxy inside the orbit of the stars and their separation from the galaxy's centre. However, this interior material emits no visible light, thus the term "dark matter."
Therefore, many scientists are utilizing math and observations to determine what they are.
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Why are there only two elements in the first period of the periodic table? (1 point)
A. Because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
B. Because the first two elements both start with H and are grouped together
C. Because the next elements have other things in common and they need to be arranged together
D. Because each row increases in atomic mass by a specific number so anything over five is in the second
Answer:A. Because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits
Explanation: This is because the The periodic table of elements is designed according to the number of shells from up going down together with their increasing number of atomic numbers, Now only Hydrogen and Helium have one shell and are therefore the only two elements that should be placed in the first period .
Also note that in filling of their s-orbital, the maximum number of electrons that it can contain is 2 as in 1s²
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an object is traveleing at a speed of 7.500.0 cm/sec. what is this value in km/day
Answer:
1 cm » 0.00001 km
1 sec » 1/86400 days
[tex]7500 {cm \: sec}^{ - 1} = \frac{75 00\: cm}{1 \: sec} \\ \\ = \frac{7500 \times 0.00001 \: km}{(1 \times \frac{1}{86400}) \: day } \\ \\ = { \boxed{ \boxed{6480 \: km \: {day}^{ - 1} }}}[/tex]
12579 nm rounded to 3 significant figures is
[tex]\\ \sf\longmapsto 12579nm[/tex]
[tex]\\ \sf\longmapsto 12579\times 10^{-9}m[/tex]
[tex]\\ \sf\longmapsto 1257.9\times 10^{-8}m[/tex]
[tex]\\ \sf\longmapsto 12.5\times 10^{-6}m[/tex]
[tex]\\ \sf\longmapsto 12.5\mu m[/tex]
Answer:
1.26e-5
Explanation:
Change 12579 nm to meters first, it becomes 1.2579e-5, then rounding it to 3 significant figures becomes 1.26e-5.
3(6+7)=
i need help on it
39..........................
Answer:
39
Explanation:
why is liquid wax transparent, while solid wax is opaque?
Answer:
hope this helps
Explanation:
it has to do with crystallization in the wax. When solid, the long alkyl chains align and crystallize, and these crystallites scatter light which leads to higher opacity. When heated, the crystallites melt, and the resulting amorphous liquid no longer scatters light.
Which one of the give elements the least reactive?
A. Fluorine
B. Chlorine
C. Iodine
D. Bromine
Answer:
c
Explanation:
iodine is the answer.please mark me as brianlist.
Answer:
Fluorine
Explanation:
It is the most reactive
What are three properties of inertia?
