Radium-226 is unstable. What is the process that allows the nucleus of radium-226 to become more stable? Question 14 options: A. ionic bonding B. radioactive decay C. hydrogen bonding D. covalent bonding E. nuclear fusion

Answers

Answer 1

Answer:

Answer: The correct answer is Option B.

Explanation:

We are given a radioisotope which is unstable in nature. For this isotope to become stable, it has to undergo radioactive decay. There are various processes by which a radioisotope may decay:

1. Alpha decay: In this decay process, a heavier nuclei decays into lighter nuclei. The particle released is alpha particle.

$_Z^A\textrm{X}\rightarrow _(Z-2)^(A-4)\textrm{Y}+_2^4\alpha$

2) Gamma decay: In this decay process, an unstable nuclei gives excess energy by a process of spontaneous electromagnetic process. This decay process releases $\gamma -radiations$ .

$_Z^A\textrm{X}^*\rightarrow _Z^A\textrm{X}+_0^0\gamma$

3) Beta-plus decay: In this decay process, a neutron gats converted into a proton and an electron. The particle released is $\beta-particle$

$_Z^A\textrm{X}\rightarrow _(Z+1)^A\textrm{Y}+_0^(-1)\beta$

4) Beta-minus decay: In this decay process, a proton gets converted into a neutron and an electron neutrino which is known as a positron particle. This is also known as $\beta ^+$ -decay.

$_Z^A\textrm{X}\rightarrow _(Z-1)^A\textrm{Y}+_(+1)^0e$

Radium-226 nuclei undergoes alpha decay to form Radon-222 nuclei by releasing alpha-particle.

$_(88)^(226)\textrm{Ra}\rightarrow _(86)^(222)\textrm{Rn}+_2^4\alpha$

Hence, the answer is Option B.

Answer 2

Answer:

the correct answer for this question is radio active decay or option b ! press brainliest...

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Special relativity questions?1.) A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest on Earth
a. the light will reach the front of the rocket after it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket before it reaches the back of the rocket. 2.) A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest in the rocket
a. the light will reach the front of the rocket before it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket after it reaches the back of the rocket. 3.) An astronaut in an inertial reference frame measures a time interval Δt between her heartbeats. What will observers in all other inertial reference frames measure for the time interval between her heartbeats?
a. Δt
b. less than Δt
c. more thanΔt
d. The answer depends on whether they are moving toward her or away from her. 4.) You are a passenger on a spaceship. As the speed of the spaceship increases, you would observe that
a. the length of your spaceship is getting shorter.
b. the length of your spaceship is not changing.
c. the length of your spaceship is getting longer. 5.) A star is moving towards the earth with a speed at 90% the speed of light. It emits light, which moves away from the star at the speed of light. Relative to us on earth, what is the speed of the light moving toward us from the star?
a. 0.90c
b. 1.9c
c. 1.20c
d. 1.1c e,) c

Answers

The right answer for the question that is being asked and shown above is that:
(1) b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
(2) a. the light will reach the front of the rocket before it reaches the back of the rocket.
(3) b. less than Δt
(4) c. the length of your spaceship is getting longer.
(5) c. 1.20c

Which of the following graphs best shows the velocity v of the clay ball from when it is dropped until it hits the ground?

Answers

Answer:

The correct option is;

Explanation:

The given information is that a clay ball is dropped from a certain height.

Therefore, the clay ball has an initial potential energy and zero kinetic energy

Which gives that the initial velocity of the clay ball = 0

As the potential energy is converted into kinetic energy, the velocity of the clay ball increases

However, if the direction of measurement of the velocity is opposite to the direction in which the clay ball is falling, the velocity of the ball progressively increases negatively as shown in option C

Final answer:

A graph of the clay ball velocity from the moment it's dropped until it hits the ground would be a straight line with a negative slope. This is because the velocity increases in the negative direction as the ball accelerates downwards under the force of gravity.

Explanation:

The graph showing the velocity v of a clay ball from when it's dropped until it hits the ground would look like a diagonal line descending from left to right with a negative slope. This is because the moment the clay ball is dropped, it starts accelerating downwards under the force of gravity. Therefore, its velocity increases in the negative direction, making the velocity-time graph a straight line with a negative slope. The slope represents the acceleration due to gravity.

Learn more about Velocity-Time Graph here:

brainly.com/question/32824917

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If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time? A. 38 Hz and 63 Hz
B. 22 Hz and 42 Hz
C. 47 Hz and 55 Hz
D. 18 Hz and 26 Hz

Answers

Answer:

B. 22 Hz and 42 Hz

Explanation:

The beat is an interference pattern which occurs when two waves of slightly different frequencies meet each other. The beat is heard as a periodic variation, whose frequency (called beat frequency) is equal to the absolute value of the difference between the frequencies of the individual waves:

$f_B = |f_1-f_2|$

In this problem, we are told that 20 beats per second are produced, so the beat frequency is

$f_B = 20 s^(-1) = 20 Hz$

Therefore, we must find the two waves which have a difference in frequency equal to this value, 20 Hz. Let's see each choice:

A. 38 Hz and 63 Hz --> $f_B = |38 Hz-63 Hz|=25 Hz$ --> NO

B. 22 Hz and 42 Hz --> $f_B = |22 Hz-42 Hz|=20 Hz$ --> YES

C. 47 Hz and 55 Hz --> $f_B = |47 Hz-55 Hz|=8 Hz$ --> NO

D. 18 Hz and 26 Hz --> $f_B = |18 Hz-26 Hz|=8 Hz$ --> NO

So, the correct choice is

B. 22 Hz and 42 Hz

The right answer for the question that is being asked and shown above is that: "B. 22 Hz and 42 Hz." If 20 beats are produced within one second, the frequencies that could possibly be held by two sound waves traveling through a medium along a common path at the same time is B. 22 Hz and 42 Hz

What type of medium makes sound travel the fastest and Explain WHY.

Answers

Answer:

V solids > V liquids > V gas

Explanation:

Speed of sounds depends of the type of material in which it travels, this phenomenon may be determined by the following formula:

V = √(B/ρ)

Where:

V= speed of sound

B= represent the medium hardness, this coefficient is expressed in Pascal units. The bigger the number, the hardest the material and sound travels faster. This is because in hardest material, particles are closer together so sound travels faster

ρ= density, for this case, for a high density value, sound travels slower

Both factors (B and P) should be considering when calculating the speed of sound

For example, for iron, B has a high value so sound travels faster, but also has a high density (this would make sound travels slower), but for this type of materials, B is much more bigger that P, hence V will be always a high number

Actually : V solids > V liquids > V gas

ρ is also important in certain circumstances, for example, in a gas, when temperature rises, P decreases, for which speed is faster in hot air

Solid medium helps sound waves to travel the fastest since the molecules inside a solid are closer to one another, allowing better transmission.

Explanation:

Talking about the motion of sound waves through the three phases of mediums (solid, liquid and gas), sound waves chose to be the fastest while travelling through the solid media.

Because in solids, the molecules are stacked closely to one another, allowing the transmission of sound waves faster as compared to the liquids or gases. In fact in air, the sound waves find clumsy to travel.

Sound waves travel about 17 times faster in steel than through air. Although there are always some exceptions yet, most of the solids provide better transmission of sound waves as compared to other mediums.

50.0 meters away from a building. Tip of the building makes an angle of 63.0° with the horizontal. What is the height of the building

Answers

Answer:

98.13m

Explanation:

Complete question

Daniel is 50.0 meters away from a building. Tip of the building makes an angle of 63.0° with the horizontal. What is the height of the building

CHECK THE ATTACHMENT

From the figure, using trigonometry

Tan(θ ) = opposite/adjacent

Where Angle (θ )= 63°

Opposite= X = height of the building

Adjacent= 50 m

Then substitute the values we have

Tan(63)= X/50

1.9626= X/50

X= 1.9626 × 50

X= 98.13m

Hence, the height of the building is 98.13m

When the temperature of a gas in a balloon is reduced by half, the average kinetic energy of the particles isa. reduced by half.
b. reduced by one-quarter.
c. increased by half.
d. increased by one-quarter.

Answers

according to KE = (3/2)kT

reducing temperature, in KELVIN, by half, average KE is reduced by half.

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