1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nastasia [14]
3 years ago
14

The quark composition of the proton and neutron are, respectively, uud and udd, where u is an up quark (charge +23e) and d is a

down quark (charge −13e). There are also anti-up u¯ (charge −23e) and anti-down d¯ (charge +13) quarks. The combination of a quark and an antiquark is called a meson. The mesons known as pions have the composition π+=ud¯ and π−=u¯d. Suppose a proton collides with an antineutron. During such collisions, the various quarks and antiquarks annihilate whenever possible.When the remaining quarks combine to form a single particle, it is a:_________.A) ProtonB) NeutronC) π+D) π−
Physics
1 answer:
ludmilkaskok [199]3 years ago
8 0

Answer:

Option C=> π+.

Explanation:

Just as it is given in the question above, we can see that the addition or combination of proton and neutron gives what is known as QUARKS.

Quarks are not easily measured because one can not see and study a quark independently; quarks move in multiples together.

The study of Quarks is very important in physics because they relate very well with electromagnetic force, strong force, weak force and Gravitational force.

"...When the remaining quarks combine to form a single particle, it is a π+".

π+ is a meson or a pion and it contains quarks and anti-quarks too

You might be interested in
Find the heat energy is required to change 2Kg of ice at 0 C to water at 20 C ( specific latent heat of fusion of water = 336000
katrin2010 [14]

We want to find the energy that we need to transform 2kg of ice at 0°C to water at 20°C.

We will find that we must give 840,000 Joules.

First, we must change of phase from ice to water.

We use the specific latent heat of fusion to do this, this quantity tells us the amount of energy that we need to transform 1 kg of ice into water.

So we need 336,000 J of energy to transform 1kg of ice into water, and there are 2kg of ice, then we need twice that amount of energy:

2*336,000 J = 672,000 J

Now we have 2kg of water at 0°C, and we need to increase its temperature to 20°C.

Here we use the specific heat, it tell us the amount of energy that we need to increase the temperature per mass of water by 1°C.

We know that:

specific heat of capacity of water = 4200 J/kg°C

This means that we need to give 4,200 Joules of energy to increase the temperature by 1°C of 1kg of water.

Then to increase 1°C of 2kg of water we need twice that amount:

2*4,200 J = 8,400 J

And that is for 1°C, we need to give that amount 20 times (to increase 20°C) this is:

20*8,400 J = 168,000 J

Then the total amount of energy that we must give is:

E = 672,000 J + 168,000 J = 840,000 J

If you want to learn more, you can read:

brainly.com/question/12474790

5 0
2 years ago
All sound waves need a(n) _______________________________________ to travel through. 4. _____________________ and ______________
Paha777 [63]

Answer:

Material medium

compressions and rarefactions

Explanation:

A sound wave is an example of a mechanical wave. All mechanical waves require a material medium for propagation. The medium for the propagation of sound is air. This is the reason why, if you cover your mouth, it will be difficult for another person to hear whatever you are saying.

Sound is also a longitudinal wave. Longitudinal waves are described in terms of compressions and rarefactions. Compressions refer to areas where air molecules crowd together while rarefactions refer to areas where the air molecules spread out.

4 0
3 years ago
A car is going 25 mph along a flat road. This is an example of what kind of energy?
monitta
This is most likely an example of kinetic energy.
3 0
3 years ago
Read 2 more answers
A student is investigating gravity and falling objects. She drops three balls and times how long it takes each ball to hit the g
nignag [31]

Answer:C

Explanation: This is because the time for the 26 gram ball was around 6 seconds longer which if they were dropped at the same height then the ball with more mass would fall faster because of its gravitational pull.

7 0
2 years ago
Read 2 more answers
The 100-kg homogeneous cylindrical disk is at rest when the force is applied to a cord wrapped around it, causing the disk to ro
Ivahew [28]

Complete question:

The 100-kg homogeneous cylindrical disk is at rest when the force F =500N is applied to a cord wrapped around it, causing the disk to roll. Use the principle of work and energy to determine the angular velocity of the disk when it has turned one revolution (radius of the disk = 300mm).

Answer:

The angular velocity of the disk when it has turned one revolution is 16.712 rad/s

Explanation:

From the principle of work and energy;

U = E₂ - E₁, since the disk is initially at rest, T₁ = 0

U = E₂

Work done, U = product of force and perpendicular distance

U = F × d

As the cord winds, force act through the cord at a distance of 2d

U = F × 2d

Distance of one complete revolution = 2πR = 2π(0.3) = 0.6π

U = 500 × 2(0.6π) = 1885.2 J

Kinetic energy E₂ = \frac{1}{2}I \omega^2 +  \frac{1}{2}m v^2

E_2 = \frac{1}{2}[(\frac{1}{2}mR^2)\omega^2] + \frac{1}{2}m(\omega R)^2\\\\E_2 = \frac{1}{2}[(\frac{1}{2}*100*0.3^2)\omega^2] +\frac{1}{2}*100(\omega)^2*0.3^2\\\\E_2 = 2.25 \omega^2 +4.5 \omega^2\\\\E_2 = 6.75 \omega^2

Recall that U = E₂

1885.2 = 6.75ω²

ω² = 1885.2/6.75

ω² = 279.2889

ω = √279.2889

ω = 16.712 rad/s

Therefore, the angular velocity of the disk when it has turned one revolution is 16.712 rad/s

3 0
3 years ago
Other questions:
  • When matter changes from one state to another, what do we call this process? A. a physical change B. a nuclear change C. an expl
    14·2 answers
  • An object in simple harmonic motion has an amplitude of 0.360 m and an oscillation period of 0.620 s. Determine the maximum spee
    14·1 answer
  • A magic school bus travelled along this path. What is the magnitude of the total
    13·1 answer
  • You find that it is easier to increase your speed on your bike if you crouch
    12·1 answer
  • Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with a force of 598 N at an angle
    15·1 answer
  • What must two objects have for gravity to exist between them
    9·2 answers
  • What does the term “retroperitoneal” mean in the terms of the location of the kidneys ?
    14·1 answer
  • Which best describes a radioactive isotope?
    9·2 answers
  • Which is a group pragram acoholics recover in
    5·1 answer
  • The forces exerted by Earth and a skier become an action-reaction force pair when the skier pushes the ski poles against Earth.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!