Kinetic Energy Problems = KE = 0.5m x 12
1. 5 kg wooden block moving at a speed of 2 m/s
2. 71kg man walking at 1.0 m/s
3. 71kg man running at 5.0 m/s
4. 1816kg car traveling at 25 m/s

Answer:

Al2(SO4)3 + 3Mg(OH)2 → 2Al(OH)3 + 3MgSO4

Explanation:

Answer:

Option D is correct

Explanation:

Nervous system is the network of nerve cells and fibres. This system helps to transfer nerve impulses among various parts of the body.

The excretory system performs the function of excretion and helps in discharging wastes.

The brain controls the release of the waste from the bladder. This is an example of the nervous system working with the excretory system.

Answer:

quantitative

Explanation:

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Answer: exothermic reaction

The monster is releasing heat energy to the environment surrounding it. The term "exo" means "outside".

In contrast, an endothermic reaction is one where energy is absorbed from the environment to cool down the surrounding air.

Explanation:

Chlorine is an element in group 7 on the periodic table.

  It is the second element in this group of halogens

 The element has a total of 17 electrons:

Ground state configuration  = 1s² 2s² 2p⁶ 3s² 3p⁵

Valence electrons are the outermost shell electrons;

  From the configuration: 3s² 3p⁵ is the valence shell

           Number of electrons  = 2 + 5  = 7

Answer:

Well, it depends on where they are orbiting! Planets that orbit closer to the Sun than Earth have shorter years than Earth. Planets that orbit farther from the Sun than Earth have longer years than Earth.

Answer: Examples of pure substances include iron, aluminum, silver, and gold. Mixtures: Substances that have two or more different particles are mixtures. Examples of mixture include the salt solution which is a 'mixture' of two components, salt, and water.

Explanation:

Answer

the answer is sound waves have a nice night

Explanation:

Answer:

sound waves

Explanation:

Sound can't travel in space

Answer:D-when explaining and documenting their work

Explanation:I took the k-12 test and got it right!:) Hope this helps!!!!

Scientists can engage in various activities in various sequences. It can be best explained by documenting and explaining their work. Thus, option D is correct.

The scientific method has been a series of events that uses observed phenomena to conduct research by testing the hypothesis that raises the question. It conducts the experiment and reaches the results to conclude the findings.

In various scientific sequences, scientists can be engaged at a time similar to explaining and documenting the work involves representation of the proper rationale and its deep and thorough explanation so to justify the hypothesis and its accountability.

Therefore, option D. the explanation and documentation are the various activities involved in different sequences.

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Answer:

490. g H₂SO₄

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

3.01 × 10²⁴ molecules H₂SO₄

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂SO₄ - 2(1.01) + 32.07 + 4(16.00) = 98.09 g/mol

Step 3: Convert

[tex]3.01 \cdot 10^{24} \ molecules \ H_2SO_4(\frac{1 \ mol \ H_2SO_4}{6.022 \cdot 10^{23} \ molecules \ H_2SO_4} )(\frac{98.09 \ g \ H_2SO_4}{1 \ mol \ H_2SO_4} )[/tex] = 490.287 g H₂SO₄

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

490.287 g H₂SO₄ ≈ 490. g H₂SO₄

Answer:

Nuclear fission

Explanation:

Even though the equation is not too clear, however, we can see that the uranium nucleus was bombarded with a particle leading to its disintegration to yield other nuclides.

A nuclear fission reaction is one in which a heavier nuclide is bombarded with a particle (usually a neutron) leading to the disintegration of that nuclide into other nuclides with the release of tremendous energy. More neutrons are released in the process to continue the reaction. Hence, it is a chain reaction.

The value of 'a' is 7.9

Chemical equations - chemical equations are symbolic depictions of chemical reactions where the reactants and products are stated in terms of their respective chemical formulae.

Balancing of chemical equation is necessary because the law of conservation of mass states that during a chemical reaction, matter cannot be generated or destroyed. This is only conceivable if the total number of atoms on the reactants' and products' sides is identical. A chemical reaction should therefore always be in balance.

According to the given equation-

2a = 135 - 15a

2a + 15a = 135

17 a = 135

a = 135/ 17

a = 7.9

You can solve it by simply transferring the variables on one side and the constants on the other side. When you transfer -15 a on the left side it becomes =15a. now, 2a + 15 a is 17 a.

For taking out the value of 'a' simply divide 135 by 17.

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Answer:

Carbon is the answer. hope that helped

At constant temperature, the behavior of a sample of a real gas more closely approximates that of an ideal gas as its volume is increased because there is an increase in the average distance between the molecules.

In chemistry, real gas does not obey gas laws under all conditions of pressure and temperature.

On the other hand, an ideal that obeys gas laws has negligible interaction and space among the molecules.

For an ideal gas, if the temperature is kept constant then the average speed and kinetic energy of the molecules remain unchanged.

Neither the size of molecules changes.

Under such conditions, it can be concluded that the ideal gas does not expand and its volume remains the same.

However, the distance between molecules increases for a real gas as its molecules expands under different temperatures and volume increases.

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Answer:

D

Explanation:

Answer:

C - Up and Down in a Circle

Explanation:

Waves are actually energy passing through the water, causing it to move in a circular motion. When a wave encounters a surface object, the object appears to lurch forward and upward with the wave, but then falls down and back in an orbital rotation as the wave continues by, ending up in the same position as before the wave came by.

A major contributor to global warming is the usage of personal vehicles. For every gallon of gas, vehicles and trucks generate about 24 pounds of carbon dioxide and other greenhouse gases, making up approximately one-fifth of total US emissions.

CO2 emission leads to global warming.

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Answer:

.

Explanation:

Answer:

1) In fusion reactions, two light atomic nuclei fuse together to form a heavier nucleus. In doing so, they release a comparatively large amount of energy that arises from the binding energy, creating an increase in temperature of the reactants.

2) iron-56

3) When a large, fissile atomic nucleus such as uranium-235 or plutonium-239 absorbs a neutron, it may undergo nuclear fission.  However, one neutron does collide with an atom of uranium-235, which then splits and releases two neutrons and more binding energy.

4) Iron cannot release energy by fusion because it requires a larger input of energy than it releases.  This energy blows the outer layers of the star off into space in a giant explosion called a supernova (plural: supernovae.)

have you tried   G o o g l e

Answer:

covalent bond

Explanation:

hope this helps :D

Answer:

The baby`s reflex to grab is an innate behavior.

It`s not B because if the baby is 1 day old it`s not going to 'remember'.

It`s not C because it hasn`t really 'learned' anything.

It`s not D because babies can`t sense heat like a snake or something. -_-

Hope that helps

I also love the pfp

The statement which statement best describes why the baby grasps Beth’s finger is that it is a reflex to grab is an innate behavior.

In biology, a reflex, or reflex action, is an involuntary, unplanned sequence or action and nearly instantaneous response to a stimulus.

The simplest reflex is initiated by a stimulus, which activates an afferent nerve. The signal is then passed to a response neuron, which generates a response.

Reflexes are found with varying levels of complexity in organisms with a nervous system. A reflex occurs via neural pathways in the nervous system called reflex arcs. A stimulus initiates a neural signal, which is carried to a synapse. The signal is then transferred across the synapse to a motor neuron, which evokes a target response. These neural signals do not always travel to the brain,so many reflexes are an automatic response to a stimulus that does not receive or need conscious thought.

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The number of liters of 3.00 M lead (II) iodide : 0.277 L

Reaction(balanced)

Pb(NO₃)₂(aq) + 2KI(aq) → 2KNO₃(aq) + PbI₂(s)

moles of KI = 1.66

From the equation, mol ratio of KI : PbI₂ = 2 : 1, so mol PbI₂ :

[tex]\tt \dfrac{1}{2}\times 1.66=0.83[/tex]

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

[tex]\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}[/tex]

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

So the number of liters(V) of 3.00 M lead (II) iodide-PbI₂ (n=0.83, M=3):

[tex]\tt V=\dfrac{n}{M}\\\\V=\dfrac{0.83}{3}\\\\V=0.277~L[/tex]

Answer:

You can make Cake CAke Cake Cake and other stuff too Ig

Explanation:

Answer:

Atomic Radius can be simply defined as the distance between the last shell of electrons and the nucleus of an atom.

Answer: The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the center of the nucleus to the boundary of the surrounding shells of electrons. Illustrated Glossary of Organic Chemistry - Atomic radius. Atomic radius: The radius of an atom. This distance between an atom's nucleus and outer electron shell. ... Atomic radius differs with the bonding state of an atom (for example a nonbonded atom of an element versus the same element within a covalent bond). Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.

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Answer:

True

Explanation:

Two liquids of a mixture having the same boiling point cannot be separated using the process of distillation.

Distillation is one of the process of physical separation techniques.

So without a difference in the boiling point of the compound that makes up a mixture, the separation by distillation will not be possible.

Answer:

B if i'm not mistaken.

Explanation:

This is the difference between a homogeneous and a heterogeneous mixture.

For example, salt (NaCl) and water make a homogeneous mixture (the same proportions of its components throughout any given sample), because both substances are polar.

A solution is homogeneous mixture composed of two or more substances.

In aqueous solution, a solvent is water and solute (in this example sodium chloride) is a substance dissolved in water.

A heterogeneous mixture is not uniform in composition (in this mixture different metals and minerals), but proportions of its components (for example mixture particles of different colors, small pebbles) vary throughout the sample.

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