Physics, 21.07.2019 19:30 kimmosley80

Five equal-mass particles (a–e enter a region of uniform magnetic field directed into the page. they follow the trajectories illustrated in (figure 1 . part a which particle (if any is neutral?

Answers: 1

Show answers

Answers

Answer from: lola06032003

We have particle A which is curved to the left-hand side.
Particles B is slowly bent to the right side.
Particle C curves towards the right side.
Particle D is perpendicularly straight.
The particle E bends towards the right side.
Therefore D is showing none deflection then it is the part D which is neutral

Answer from: dreamdancekay

Particle D is neutral

Further explanation

Magnetic fields can be generated by:

1. a moving charge 2. current element 3. straight electrical wire 4. electrical wire coiled

The charge of a moving electron experiences a magnetic force.

The magnetic force (Lorentz) acting on a charge moving in a magnetic field is:

F = B i l sin α

F = magnetic force, N

B = magnetic induction, Wb / m²

i = electric current, A

l = length of conductor, m

α = angle between current and magnetic field

The path traveled by the charge over time is proportional to velocity (v = l / t), while the current I = q/t

so the magnetic force equation becomes

F = Bqv sin a

If we look at the picture, the particle enters the magnetic field perpendicularly so that the magnetic force functions as a centripetal force

F = Bqv sin 90 = m.ac (ac = centripetal acceleration)

$\displaystyle Bqv=m\frac{v^2}{r}$

$\displaystyle r=\frac{mv}{Bq}$

From this equation shows that the radius of the path of a particle is proportional to its linear velocity

From the picture also shows that particle D is not deflected in a magnetic field, so that the path moves straight, so the magnetic force = 0, can also show neutral charged particles because there is no magnetic force acting on it

Learn more

the average velocity

link

resultant velocity

link

velocity position

link

Keywords: Centripetal force, linear velocity, magnetic force, Lorentz

Five equal-mass particles (a–e enter a region of uniform magnetic field directed into the page. they

Answer from: Quest

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

$_a^z\textrm{x}\rightarrow _{a-2}^{z-4}+_2^4\alpha$

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

$_a^z\textrm{x}+_{-1}^0\textrm{e}\rightarrow _{z-1}^a\textrm{y}$

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases $\gamma -radiations$ . this process does not change the mass number.

$_a^z\textrm{x}^*\rightarrow _a^z\textrm{x}+_0^0\gamma$

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as $\beta ^+$ -decay. in this the mass number remains same.

$_a^z\textrm{x}\rightarrow _{z-1}^a\textrm{y}+_{+1}^0e$

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.

Answer from: Quest

here we know that ball will drop down by total distance 3.2 m

so here we know that

$v_{yi} = 0$

$\delta y = - 3.2 m$

now using kinematics

$\delta y = v_{yi} t + \frac{1}{2}at^2$

$-3.2 = 0 -\frac{1}{2}(9.8) t^2$

$t = 0.81 s$

now in the same time it will cover horizontal distance of 0.75 m

$\delta x = 0.75m$

so speed of the ball will be

$v = \frac{delta x }{\delta t}$

$v = \frac{0.75}{0.81} = 0.93 m/s$

Another question on Physics

Physics, 22.06.2019 11:20

Sound is a disturbance that travels through a medium as a

Answers: 1

Answer

Physics, 22.06.2019 15:30

The movement of electrons between atoms is called an

Answers: 2

Answer

Physics, 22.06.2019 21:00

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this

Answers: 2

Answer

Physics, 22.06.2019 22:00

What would people living along the coast in south florida do if there was a hurricane warning? move to locations away from the water flock along coasts to watch the natural phenomenon buy instruments to predict the exact location of the hurricane measure water levels to know the exact time of the hurricane

Answers: 3

Answer

You know the right answer?

Five equal-mass particles (a–e enter a region of uniform magnetic field directed into the page. they...

Questions