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## Some life forms move so slowly that their movement cannot be detected by normal observation. The best way to determine any movement is by placing a mark at some point, and observing any change in position from it. Why is this true?

Some life forms move so slowly that their movement cannot be detected by normal observation. The best way to determine any movement is by placing a mark at some point, and observing any change in position from it. Why is this true?

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## Which of the following methods is NOT used to determine population size? a. indirect observation c. captive breeding b. mark-and-recapture d. sampling

Which of the following methods is NOT used to determine population size? a. indirect observation c. captive breeding b. mark-and-recapture d. sampling

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## What is the term for collecting information about the physical world via the senses or a scientific instrument? A. Experiment B. Phenomenon C. Theory D. Observation

What is the term for collecting information about the physical world via the senses or a scientific instrument? A. Experiment B. Phenomenon C. Theory D. Observation

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## Shari was in the kitchen when she heard a crash. She went into her bedroom and found her window broken and a baseball lying on the ground. Shari said “this baseball broke my window.” This statement is an inference because she is blaming someone else for the broken window. inference because she drew a conclusion based on evidence. observation because she heard the crash before she came into the room. observation because she can see the evidence

There are primarily three subatomic particles in an atom;
Protons
Electrons
Neutrons
—————-
Protons are positively charged subatomic particles in an atom. These particles give an element it’s identity, based on it’s ‘Atomic Number’, or how many protons are contained in the atom.

Electrons are negatively charged subatomic particles in an atom. These particles give an element it’s reactivity, and are a major part in finding where an element lies on the Periodic Table by valence electrons. We can discuss more of this in PM if you’d like to know more about this. Electrons are also a major part of finding an element’s ‘atomic mass’, or how many neutrons it has.

Neutrons are subatomic particles in an atom that have a neutral or ‘no’ charge. These are inside of the nucleus of an atom, as opposed to protons and electrons, which are farther outward of the center of an atom.

I hope this helps!

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## The thesis statement A. is the focus of the literary analysis. B. is the introduction to the literary analysis. C. is the final observation in the literary analysis. D. is the supporting detail of the literary analysis.

Here are a few pointers; hope this is useful)

Ovation-by definition- is show of appreciation from an audience, for a person’s accomplishments or flaw.

“Everyone deserves a standing ovation because we all overcometh the world.”

A person’s accomplishment could be how they made a positive change in this world, strong leadership- that makes them a effective leader or simply helping others. A person’s flaw- mistakes in life, sin or even guilt should also be considered an appreciation- an ovation for representing mankind’s flaw and that humanity makes mistakes, fulfilling at least one deadly sin such as greed, lust, selfishness etc.

Thus, regardless of a person’s achievement or flaw- a person deserves an applause for, not the least, living in this society and this world that we are all living together and dying together.

That was just the introduction.. the best part is yet to come.. now it’s your turn!!

Shakespeare’s famous line “All the World’s a stage. That agrees with your line: “Everybody deserves a standing ovation…”

Shakespeare explains that men and women are like players: they live, and die, some being celebrated and some forever living in solitude till their death. Shakespeare states the world is a “stage” which symbolizes that mankind is in its peak. The world is changing everyday: little by little and humanity is falling behind.
Due to our world turning into machinery: factories, an automotive future: where humans only job to live (entrance) and to die (exit) the famous humans remembered and the flawed not recalled.

This is according to Shakespeare’s imagery.

I don’t know what grade your in, but I think simplifying Shakespeare’s word of mouth in your essay would be handy and useful as it has strong references of your quote, and agrees strongly in your essay.

Hope this helps 🙂

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## Related questions

### What are the first steps in Hands-Only CPR? A) Check for safety, see if the person in responsive, look for breathing, and call 911 B)Call 911, look for breathing, check for safety, and see if the person is responsive C)Look for breathing, check for safety, call 911, and see if the person is responsive D)See if the person is responsive, check for safety, call 911, and look for breathing

Check the scene and the person. Check to make sure the scene is safe, tap the person on the shoulder to see if they’re OK, and look for signs of rhythmic, normal breathing.

ANSWERED AT 22/10/2019 – 01:41 PM

QUESTION POSTED AT 22/10/2019 – 01:41 PM

The answer to the first question is It reduces your risk of injury
2. I don’t understand what this question is asking
3.
Put on sunblock 30 minutes before going in the sun.
4.
secret formula FDA-approved
5.
Cooling down increases the lactic acid in your muscles, helping to protect them from injury
6.
Clothes should be tight and lie flat against skin to prevent chafing.
7.
How expensive is the product?
8. I don’t know the answer to this problem
9.
Electrolytes help carry electrical impulses from one cell to another.
10.
Stretching is important for flexibility and keeps your muscles from tightening up during physical activity.

ANSWERED AT 22/10/2019 – 01:13 PM

QUESTION POSTED AT 22/10/2019 – 01:13 PM

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## Which is not a step in most scientific investigations? developing a hypothesis to explain collected data proving a theory and writing a new scientific law collecting data through observation and measurement observing and experimenting to test a hypothesis

25) Answer is: less metallic and more nonmetallic.

Electronegativity increases from left to right across a period, atoms have tendency to attract electrons.

Electronegativity (χ) is a property that describes the tendency of an atom to attract a shared pair of electrons.

Radioisotope has an unstable atomic nucleus and emit energy and particles when it changes to a more stable form.

Francium (Fr) is element with atomic number 87 (87 protons and 87 electrons).

Boiling is the temperature at which the vapour pressure of the liquid is equal to the pressure exerted on the liquid by the surrounding atmosphere.

The Celsius scale was based on 0°C for the freezing point of water and 100°C for the boiling point of water at 1 atm pressure.

There are two types of reaction:

1) endothermic reaction (chemical reaction that absorbs more energy than it releases, ΔH>0).

2) exothermic reaction (chemical reaction that releases more energy than it absorbs).

For example, the breakdown of ozone is an endothermic process. Ozone has lower energy than molecular oxygen (O₂) and oxygen atom, so ozone need energy to break bond between oxygen atoms.

The average kinetic energy of molecules depends on the temperature.

As temperature increases, molecules gain more energy from surrounding and move faster.

Kinetic energy (standard unit is the joule J) depends on speed of the molecule.

Solid gains kinetic energy to become a liquid and then becomes a gas.

This was famous Rutherford’s Gold Foil Experiment: he bombarded thin foil of gold with positive alpha particles.

Rutherford observed the deflection of alpha particles on the photographic film.

Alpha particles are helium atom particles, consist of two protons and two neutrons.

According to Rutherford model of the atom: atoms have their charge concentrated in a very small nucleus.

For example, calcium oxide.

Calcium oxide (CaO) has ionic bonds between calcium cations (Ca²⁺) and oxygen anions (O²⁻).

Because it has strong ionic bonds, it has high melting point (around 2600°C).

Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).

32) Answer is: a scientific model.

A scientific model is a representation of an idea, an object, a process or a system that is used to describe and explain phenomena that cannot be experienced directly.

33) Answer is: the superscript is mass number and the subscript is atomic number.

Atomic number(Z) is the number of protons, which is characteristic of a chemical element..

Mass number (A) is the total number of protons and neutrons in a nucleus.

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## A scientist adds heat to each of the following substances. Which will probably absorb the most heat before its temperature changes significantly? 50 g of solid copper 50 g of solid iron 50 g of liquid water 50 g of sand Question 2(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid. Question 3(Multiple Choice Worth 2 points) Which of these best explains what happens when the ionic substance calcium chloride (CaCl2) dissolves in water? The oxygen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the Cl− ions. The hydrogen atoms in the water molecules are attracted to the Ca2+ ions. The oxygen atoms in the water molecules are attracted to the H+ ions. Question 4(Multiple Choice Worth 2 points) Which of these statements about water is true? Its atoms share electrons equally. It can dissolve all known substances. Its molecules are farther apart in the solid state than in the liquid state. It has a lower specific heat than nearly all known metals.

The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies.

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface.

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h.

So the time for the pencil and eraser to touch is T=1.3449 hours.

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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## Areas near oceans or large lakes tend to have more moderate climates than do areas far from large bodies of water. Which of these statements best explains this observation? Hydrogen and oxygen atoms share electrons in a water molecule. Lakes and oceans contain dissolved solids. Water has a very high specific heat. Water produces buoyant forces. Question 2(Multiple Choice Worth 2 points) A scientist discovers a new substance. The molecules of the substance form hydrogen bonds with each other. When the molecules lose a lot of energy, the hydrogen bonds hold them relatively far apart. Based on this information, what can the scientist infer about the substance? It expands when it freezes. It is highly colored. It exists only as a gas. It does not dissolve ionic compounds. Question 3(Multiple Choice Worth 2 points) Which of the following properties of water is due primarily to the uneven distribution of charge between the hydrogen and oxygen atoms? its color its taste its ability to dissolve ionic substances its ability to produce buoyant forces Question 4(Multiple Choice Worth 2 points) A drop of water placed on a smooth, dry surface will form a dome-shaped droplet instead of flowing outward in different directions. Which of these best explains this observation? The bonds between hydrogen and oxygen atoms are very strong. The electrons in the atoms attract the electrons in the other atoms. Water molecules at the surface experience fewer hydrogen bonds than water molecules within the liquid. Water molecules near the surface produce more buoyant force than water molecules within the liquid.

The gravitational force Fg between two objects is given by the equation:

Fg=(G*m₁*m₂)/r₂, where G=6.67*10^-11 m³ kg⁻¹ s⁻² is the gravitational constant, m₁ and m₂ are the masses of the two bodies and r is the distance between those bodies.

Due to the gravitational attraction the pencil and the eraser will attract if we there is no friction on the surface.

m₁=10 g=0.01 kg is the mass of the pencil
m₂=20 g=0.02 kg is the mass of the eraser
r=2.5 cm = 0.025 m

First we calculate the Fg:

Fg={(6.67*10^-11)*0.01*0.02}/(0.025²)=2.1344*10^-11 N

To get the velocity v of the pencil:

v²=2as, where a is the acceleration of the pencil and s is the path. In our case s=r so we can write:

v²=2ar

a=Fg/m₁= 2.133*10^-9 m/s²

v²=2*(2.133*10^-9)*0.025=1.0665*10^-10

v=√(1.0665*10^-10)=1.0327*10^-5 m/s

We have the velocity and the acceleration, so we can calculate the time t with the equation:

t=v/a=(1.0327*10^-5)/(2.133*10^-9)=4841.6 s

1 hour has 3600 s so when we divide time t in seconds by 3600 we get time T in hours:

T=t/3600=4841.6/3600=1.3449 h.

So the time for the pencil and eraser to touch is T=1.3449 hours.

Also time T can be expressed like T= 1h and 20 mins and 41.64 s

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## In order to carefully control conditions and confirm or disconfirm a hypothesis about the causes of behavior, one must a. engage in naturalistic observation. b. develop a causal correlation. c. perform an experiment. d. conduct a survey.

The answer is C. In order to carefully control conditions and confirm or disconfirm a hypothesis about the causes of behavior, one must perform an experiment.

Explanation:

Experimental research allows the researcher to control all the variables in order to create the conditions that can confirm or disconfirm a hypothesis. This method aimes to establish a relation of causality between two variables, which means that one variable is generated and determined by the other; this is posible because all of the other variables that can influence it have been controlled.

When a researcher conducts a survey or engages in naturalistic observation, he can’t control the variables, therefore, he can only establish a correlation between two variables, but not of causality.

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## The observation that ethanol (C2H5OH) has a higher vapor pressure than water (H2O) at the same temperature is due to more A. Hydrogen bonding in the water B. Kinetic energy in the ethanol C. London forces in the ethanol D. Hydrogen bonding in the ethanol E. London forces in the water What is the correct order for the surface tension of the following substances? A. Hg, C8H18, H2O B. Hg, H2O, C8H18 C. C8H18, H2O, Hg D. C8H18, Hg, H20 E. H2O, Hg, C8H18

This problem is to apply Roult’s Law.

Roult’s Law states that the vapor pressure, p, of a solution of a non-volatile solute is equal to the vapor pressure of the pure solvent, Po solv, times the mole fraction of the solvent, Xsolv

p = Xsolv * Po sol

X solv = number of moles of solvent / number of moles of solution

The solvent is water and the solute (not volatile) is glycerin.

Number of moles = mass in grams / molar mass

mass of water = 132 ml * 1 g/ml = 132 g

molar mass of water = 18 g/mol

=> number of moles of water = 132 g / 18 g/mol = 7.33333 mol

mass of glycerin = 27.2 g

molar mass of glycerin:, C3H8O3: 3 * 12 g/mol + 8 * 1 g/mol + 3*16 g/mol = 92 g/mol

number of moles of glycerin = 27.2g / 92 g/mol = 0.29565

total number of moles = 7.33333 moles + 0.29565 moles = 7.62898 moles

=> X solv = 7.33333 / 7.62898 = 0.96125

=> p = 0.96125 * 31.8 torr ≈ 30.57 torr ≈ 30.6 torr.

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## Evan was in his bedroom when he heard the sound of breaking glass. He went out to the kitchen to see a vase broken on the floor and his dog walking away. Evan said “the dog broke the vase!” This statement is an A. observation because he knows that his dog broke the vase. B. observation because he heard the vase break before he came into the room. C. inference because he formed a logical conclusion based on the evidence. D. inference because he is blaming the dog without any proof.

### Further explanation

Diamond is 100% pure elemental carbon, compressed to its crystal form, under extreme heat and pressure deep within the Earth. The symbol for carbon is C.

Step-1: convert carat to grams

The carat represent the unit of weight for diamonds and other gemstones. From several sources, it is known that 1-carat = 0.2 grams of carbon atoms.

Converting 1.3-carat to several grams of carbon atoms

So 1.3-carat diamonds are equal to 0.26 grams of carbon atoms.

Step-2: convert grams to moles

From the periodic table of elements, we know that the atomic mass of carbon is 12 g/mol. The relationship between mole, gram, and atomic mass is

Converting 0.26 grams to moles

We obtain 0.0217 moles of carbon atoms.

Final step: convert mole to atoms

The relationship between mole, the number of atoms (N), and Avogadro’s number is

Rounding to 2 decimal places to produce and in the form of scientific notation is

So there is are there in a 1.3-carat diamond.

Quick way

Rearrange it

1. General issues about types of reactions, mixtures and compounds brainly.com/question/2327210
2. How many atoms of copper are present in one mole of copper? brainly.com/question/11813126
3. Which unit is used for measuring atomic mass? brainly.com/question/11267881

Keywords: how many, carbon atoms, in a 1.3-carat diamond, a form of pure carbon, elemental, 100%, 1-carat = 0.2 grams, moles, atomic mass, avogadro’s number, converting

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