A student studies four chemicals in a laboratory investigation.


Which chemical cannot be further broken down into other chemicals using ordinary laboratory processes?

Answer:

Explanation:

Two charged particles will vary in energy as we alter the distance between them.

Answer: -25.4

Explanation:

Acellus don’t forget the negative sign

Answer:

-25.4

Explanation:

Acellus

Give the man above me brainliest!

Answer:

Given parameters

Potential difference (V) = 220 V

Power of lamp 1 (P1) = 100 W

Power of lamp 2 (P2) = 60 W

Both the bulbs are connected in parallel. Therefore, the potential difference across each of them will be 220 V, because no division of voltage occurs in a parallel circuit.

We know that

Power = Voltage x Current

P = V x I

I = P/V

Lamp 1:

I1 = P1/V

I1 = 100/220

I1 = 5/11 A

Lamp 2:

I2 = P2/V

I2 = 60/220

I2 = 3/11 A

Net current (I) = I1 + I2

I = 5/11 + 3/11

I = 8/11

I = 0.7273 A

Hence, current drawn from the line is 0.727 A

Explanation:

Hope this helps!

Answer: The word that musicians use for frequency is pitch. The shorter the wavelength, the higher the frequency, and the higher the pitch, of the sound. In other words, short waves sound high; long waves sound low. Instead of measuring frequencies, musicians name the pitches that they use most often.

Explanation:  The frequency of a sound wave is the number of vibrations that occur per second. The pitch of a sound is a description of how high or low the sound seems to a person. The pitch a person hears depends on the frequency of the sound wave.

Answer:

Explanation:

Answer:

C

electron movement

Explanation:

The electron is a subatomic particle, symbol 

e−

 or 

β−

, whose electric charge is negative one elementary charge.[9] Electrons belong to the first generation of the lepton particle family,[10] and are generally thought to be elementary particles because they have no known components or substructure.[1] The electron has a mass that is approximately 1/1836 that of the proton.[11] Quantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value, expressed in units of the reduced Planck constant, ħ. Being fermions, no two electrons can occupy the same quantum state, in accordance with the Pauli exclusion principle.[10] Like all elementary particles, electrons exhibit properties of both particles and waves: they can collide with other particles and can be diffracted like light. The wave properties of electrons are easier to observe with experiments than those of other particles like neutrons and protons because electrons have a lower mass and hence a longer de Broglie wavelength for a given energy.

Electrons play an essential role in numerous physical phenomena, such as electricity, magnetism, chemistry and thermal conductivity, and they also participate in gravitational, electromagnetic and weak interactions.[12] Since an electron has charge, it has a surrounding electric field, and if that electron is moving relative to an observer, said observer will observe it to generate a magnetic field. Electromagnetic fields produced from other sources will affect the motion of an electron according to the Lorentz force law. Electrons radiate or absorb energy in the form of photons when they are accelerated. Laboratory instruments are capable of trapping individual electrons as well as electron plasma by the use of electromagnetic fields. Special telescopes can detect electron plasma in outer space. Electrons are involved in many applications such as electronics, welding, cathode ray tubes, electron microscopes, radiation therapy, lasers, gaseous ionization detectors and particle accelerators.

Interactions involving electrons with other subatomic particles are of interest in fields such as chemistry and nuclear physics. The Coulomb force interaction between the positive protons within atomic nuclei and the negative electrons without, allows the composition of the two known as atoms. Ionization or differences in the proportions of negative electrons versus positive nuclei changes the binding energy of an atomic system. The exchange or sharing of the electrons between two or more atoms is the main cause of chemical bonding.[13] In 1838, British natural philosopher Richard Laming first hypothesized the concept of an indivisible quantity of electric charge to explain the chemical properties of atoms.[3] Irish physicist George Johnstone Stoney named this charge 'electron' in 1891, and J. J. Thomson and his team of British physicists identified it as a particle in 1897 during the cathode ray tube experiment.[5] Electrons can also participate in nuclear reactions, such as nucleosynthesis in stars, where they are known as beta particles. Electrons can be created through beta decay of radioactive isotopes and in high-energy collisions, for instance when cosmic rays enter the atmosphere. The antiparticle of the electron is called the positron; it is identical to the electron except that it carries electrical charge of the opposite sign. When an electron collides with a positron, both particles can be annihilated, producing gamma ray photons.

Answer:

B

Explanation:

the balloon has a negative charge and the metal sphere has a positive charge

Answer: B

Explanation:

The balloon will pick up stray electrons, so it will become negatively charged. Since it is attracted to the metal sphere, the sphere must be positively charged.

Answer:

Neseciti puntos oara mi tarea y mad ni entiendo lo wue dices

Answer:

Ballon B's electric field would be directed away from Balloon A since B exerts a repulsive force on A. Balloon B would also have a negative charge, since like charges repel one another.

Explanation:

The electric field created by Balloon B will be directed away from Balloon A.

The direction of electric field is always opposite to the direction of negative charge.

The electric field created will be directed opposite to the negative charge of balloon A.

Thus, the complete sentence will be, "the electric field created by Balloon B will be directed away from Balloon A.

Learn more about direction electric field here: https://brainly.com/question/14372859

Answer:

1.) Experiments

2.) Mass, occupies space

3.) Potential energy

Explanation:

Answer

This is done by Nuclear Fusion.

Light nuclei like Hydrogen(Deuterium) combine to produce new Elements like Helium.

²H + ²H === ⁴He + ENERGY

The subscripts of the Hydrogen atoms are 1

While that of Helium is 2. My Keyboard couldn't type those

Answer:

The particles will more likely to move faster since they are converted from a liquid to gas.

Rules for States of Matter:

1. Solid particles always are packed close together and don't have much space to move.

2. Liquid particles have space to move around but are still packed together, but not as close as solid.

3. Gas particles are moving freely, in fact they are in the air! Gas particles are free to move wherever. For example, the air has gas particles that are constantly bumping into each other.

Let me know if I am right =)

Answer:

9 m/s

Explanation:

13.5 × [tex]\frac{2}{3}[/tex] = 9

Answer:I think the answer is B. The alpha Deacy but not sure

Explanation:

The type of radioactive decay is the mass number of a nucleus reduced by four is known as alpha decay.

Alpha decay is defined as the type of radioactive decay in which the parent nucleus emits an alpha particle.

Here,

In alpha decay, the parent atomic nuclei emits an alpha particle or helium nucleus and as a result the parent nuclei gets transformed into a different atomic nuclei.

The reaction in alpha decay is given by,

zXᵃ  →  z-₂Yᵃ⁻⁴ + ₂He⁴

From the reaction, it is shown that the new nuclei formed will have a mass number which is decreased by four from that of the parent nuclei. Also, the atomic number of the new atomic nuclei formed is reduced by two.

Thus, in alpha decay, the mass number of the parent nuclei gets reduced by four.

Hence,

The type of radioactive decay is the mass number of a nucleus reduced by four is known as alpha decay.

To learn more about alpha decay, click:

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Answer:

In the second law, the force on an object is equal to its mass times its acceleration. I hope this helped!

Explanation:

Answer:

Sound travels at different speeds depending on what it is traveling through. Of the three mediums (gas, liquid, and solid) sound waves travel the slowest through gases, faster through liquids, and fastest through solids.

Sound waves fall into three categories: longitudinal waves, mechanical waves, and pressure waves.

Answer:

Speed of sound ways in railroad = 6,135.8 m/s

Explanation:

Given:

Distance cover by sound wave = 2,350 meter

Time taken by sound wave to cover distance = 0.383 seconds

Find:

Speed of sound ways in railroad

Computation:

Speed = Distance / Time

Speed of sound ways in railroad = Distance cover by sound wave / Time taken by sound wave to cover distance

Speed of sound ways in railroad = 2,350 / 0.383

Speed of sound ways in railroad = 6,135.77

Speed of sound ways in railroad = 6,135.8 m/s

Answer: Water will. (A) freeze.

Explanation: 0 degrees Celsius is cold so the water will turn into a solid and therefore freeze.

Answer:

La fuerza electrostática es 2.61 N.

Explanation:

La fuerza electromagnética es la interacción que se da entre cuerpos o partículas que poseen carga eléctrica.

La ley de Coulomb se emplea para calcular la fuerza eléctrica que actúa entre dos cargas en reposo y dice que la magnitud de cada una de las fuerzas eléctricas con que  interactúan dos cargas puntuales, es directamente proporcional  al producto de las cargas e inversamente proporcional al  cuadrado de la distancia que las separa. Matemáticamente se expresa como:

[tex]F=k*\frac{q1*q2}{r^{2} }[/tex]

donde:

Siendo en este caso:

Reemplazando:

[tex]F=9*10^{9} \frac{N*m^{2} }{C^{2} }*\frac{1*10^{-6}C *2.9*10^{-6}C}{(0.1 m)^{2} }[/tex]

Resolviendo:

[tex]F=9*10^{9} \frac{N*m^{2} }{C^{2} }*\frac{2.9*10^{-12}C^{2} }{0.01 m^{2} }[/tex]

F= 2.61 N

La fuerza electrostática es 2.61 N.

Answer:

The way the body resist it's state in motion is called inertia. Its directly proportional to it's mass.

Explanation: This is what we call Newton's First Law and "State Of Motion".

Answer: The third law states that for every action (force) in nature there is an equal and opposite reaction.

Explanation:

if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

Hope this helps you! Have a good day! ^-^

Answer:

the regular daily rises and falls in sea level caused by the gravitational attraction of the Moon and Sun on Earth.

Explanation:

Tides can be defined as the rise and fall of water level in water bodies such as lakes and oceans due to the gravitational force of attraction exerted by the moon on earth. The side closest to the moon creates a bulge of water known as high tide. Low tides are generally experienced when a sea level is not within the bulge.

Generally, the gravitational pull of the Moon cause visible changes on planet Earth's surface.

This ultimately implies that, the pull of the Moon's gravity causes high and low tides on planet Earth's surface.

The various types of ocean tides based on the position of the Earth, Moon and the Sun are;

I. Neap tides.

II. Spring tides.

III. Low tide.

IV. High tide.

V. Brown tide.

VI. Rip tide.

VII. Red tide.

Answer:

the answer is 250

Explanation: took the test