What’s the answer??????????????????

Answer: A. 74 Minutes

Explanation: A P E X

Answer:

breaking apart of atoms of certain elements to release rays of energy or particles.

Atoms are the building blocks of elements. However, some atoms have an excessive number of neutrons or protons in their nuclei. This causes an imbalance in the forces that keep them together, resulting in an excessive amount of internal energy. These atoms are referred to as radioactive or unstable.

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Answer:

the correct one is B     ₊₁e

Explanation:

In the radioactive emission process there are three fundamental types, enision of alpha particles, emission of beta rays and emission of high energy photons.

In beta particle emission processes, a neutron decomposes, emitting an electron and an antineutrino, so the mass number of the nucleus does not change, but the atomic number increases by one unit.

Another possibility is the emission of a positron (positive charge) plus a neutrino, in this case the atomic mass remains constant and the atomic number decreases by one unit.

The second beta emission process if it describes the situation presented, when reviewing the answers the correct one is B

Answer:

there is no list of "the following" you might want to re-upload your question.

Answer:

50*5=250KG*M/S

Explanation:

P=M*V

MOMENTUM FORMULA

Answer: it will move to the left

Explanation: i remeber doing this

Answer: The infra red waves is located between microwave and visible light based on their WAVELENGTH and FREQUENCY of occurrence.

Explanation:

Electromagnetic waves are those waves that do not require or need a material medium for its propagation, but they are able to travel through a vacuum. They exhibit or show all properties associated or connected with light. They are undeflected in electric and magnetic fields. These electromagnetic waves are arranged in order of their FREQUENCY and WAVELENGTHS which is known as ELECTROMAGNETIC SPECTRUM.

FREQUENCY is defined as the number of cycles which the wave completes in one second and is measured in Hertz(Hz). While WAVELENGTH is defined as the distance between two successive crests or troughs of waves which is measured in meter (m).

The electromagnetic spectrum is made up of the following rays which is arranged from the biggest wavelengths to the smallest:

--> Radiowaves

--> microwave :

--> infrared rays:

--> visible light:

--> ultraviolet rays

--> x-rays and

--> Gamma rays.

According to the arrangement of the spectrum above, the microwave has a higher wavelength and frequency than the infrared rays, while the visible light has a lower wavelength and frequency than the infrared rays.

Answer:

True

Explanation:

Because that's what the law of inertia does

Answer: The air is compressed after the sound wave passes. 4. The density of air increases and then decreases as the sound wave passes.

Explanation:

Answer:

I tried and could not understand it sorry

Explanation:

Answer:

lets see :)

Explanation:

Answer:

yes I think so. ..................

Answer:

2.82 V

Explanation:

v^2 = 2(12) / 3 is the formula

v^2 = 24 / 3

v^2 = 8, then you square v^2 and 8, to remove the ^2

and you got your answer! I believe this is correct, but let me know if it isn't.

Answer:

true

Explanation:

Answer:False.

Explanation: HIV is a viruse that only shows symptoms after a few weeks. in Fact HIV does not show any physical symptoms. So, no you can not tell if someone has or is been infected by HIV by directly looking at them.

Have a Nice Day!!! =)

Answer:

V = 0.87 volt

Explanation:

Given that,

Charge, [tex]q=7.3\times 10^{-17}\ C[/tex]

Electric potential energy, [tex]U=6.4\times 10^{-17}\ J[/tex]

We need to find the value of electric potential at a point. The relation is as follows :

[tex]V=\dfrac{U}{q}[/tex]

Where

V is electric potential

So,

[tex]V=\dfrac{6.4\times 10^{-17}}{7.3\times 10^{-17}}\\\\V=0.87\ V[/tex]

So, the value of the electric potential at a point is equal to 0.87 Volts.

Answer:

annular solar eclipse

Explanation:

An annular solar eclipse happens when the Moon covers the Sun's center, leaving the Sun's visible outer edges to form a "ring of fire" or annulus around the Moon. It happened because the apparent size of the Moon is smaller than that of the Sun

Answer:

annular solar eclipse

Explanation:

a solar eclipse happens when the moon covers the sun centre

Answer:

Balancing on one finger.

Tossing between hands.

Using a different body part.

Building a tower.

Throwing it high in the air.

Flipping it over.

Switching between fingers.

Going behind the back.

Explanation:

Just stuff I used to do ^^

Answer:

a compound

Explanation:

a compound

hope this helps

Answer:

Reflective clothing. So vehicles can see them and stuff.

Answer:

Simple clocks measure time by counting, quartz crystal vibrations or mechanical pendulum oscillations. Atomic clocks measure the oscillations in electron transitions by the radition emited in the form of microwave or higher frequency electro magnetic waves.

Explanation:

Answer:

1.6875m/s²

Explanation:

[tex] acceleration = \frac{final \: velocity \: - \: initial \: velocity}{time \: taken} [/tex]

a = unknown.

v (final velocity) = 27m/s

u (initial velocity) = 0m/s (as the car was stationary in the traffic lights).

t (time taken) = 18s

[tex]a = \frac{27 - 0}{16} [/tex]

acceleration = 1.6875m/s²

hope it helps. :)

Answer:

18

Explanation:  

V = voltage

I = current  

R = resistance  

V = IR is the equation to find out the Voltage of an item so if we move around the equation so we are trying to resistance it would become R = V/I.  

V = IR  

R = V/I  

R = 9/0.5  

R = 18

Answer:

Average speed  = 50 mph

Explanation:

Average speed  = (30 miles + 45 miles + 75 miles)/3 hours = 50 mph

Answer:

Diferencia de energía de las dos fuentes = 800 watts

Explanation:

Cantidad de energía recibida en el mar = 1000

Cantidad de energía solar recibida en el mar = 200

Diferencia de energía de las dos fuentes = 1000 -200 = 800 watts

Answer:

The answer is C

I just took the quiz

The statement (C) atomic identity changes but the total number of protons and neutrons do not is correct.

The addition or deletion of protons to a nucleus is referred to as transmutation. A transmutation occurs when deuterium is converted to helium.

We have a decay equation shown below:

[tex]\rm _{11}^{6}\textrm{C} \rightarrow_{11}^{5}\textrm{B}+_{0}^{+1}\textrm{e}[/tex]

As the one-electron subtraction occurred and atom C becomes atom B so the decay equation is affected by atomic identity, but not by the total number of protons and neutrons.

Thus, the statement (C) atomic identity changes but the total number of protons and neutrons do not is correct.

Learn more about the transmutation here:

https://brainly.com/question/11545568

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The type of energy that an unlit match has is potential energy.

Answer:

D. Atoms with eight valence electrons usually do not gain or lose

electrons.

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.

Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.

Based on the octet rule which states that atoms of chemical elements gain, lose or share electrons so as to have eight (8) electrons in their valence shell. Therefore, atoms of chemical elements bond in order to attain the electronic configuration of a noble gas i.e a full valence shell which comprises of eight (8) electrons.

This ultimately implies that, atoms with eight valence electrons usually do not gain or lose electrons because they're noble gas.