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
Fofino [41]
3 years ago
15

An electron is accelerated from rest by an electric field. After the acceleration, the electron is injected into a uniform magne

tic field of 1.27 times 10-3 T. The velocity of the electron and the magnetic field lines are perpendicular to one another. The electron remains in the magnetic field for 5.13 times 10-9 seconds. The angle (in radians) between the initial electron velocity and the final electron velocity is ____.
Physics
1 answer:
snow_lady [41]3 years ago
6 0

Answer:

Explanation: the electron will move uniformly in circular path in magnetic field .

Let B be magnetic field , r be radius of circular path , v and ω be linear and angular velocity of electron , q and m  be charge on electron and mass of electron

centripetal force = magnetic force on electron

mω²r = B q v

mω² = B q (v / r)

mω² = B q ω

ω = B ( q / m )

= 1.27 x 10⁻³ x( 1.6 x 10⁻¹⁹ / 9.1 x 10⁻³¹ )

= .2233 x 10⁹ rad / s

angle of rotation by electrons

= angular velocity x time

= .2233 x 10⁹ x 5.13 x 10⁻⁹

= 1.145 radian .

You might be interested in
Suppose a constant net force of 345 N is applied to slide a heavy stationary couch across the
ira [324]

Answer:

517.5Ns

Explanation:

F=(MV - MU)/t

where MV - MU is the change in momentum,

therefore, MV - MU = Ft

= 345 X 1.

= 517.5Ns

4 0
2 years ago
Mechanical energy is the sum of ________ energy and potential energy.apex
crimeas [40]
Mechanical energy is the sum of kinetic energy and potential energy
6 0
3 years ago
What is the wavelength of a wave traveling at 300 m/s if the frequency is 10 Hz?
lions [1.4K]

Answer:

30 m

Explanation:

The wavelength of a wave is found by the velocity divided by the frequency. Therefore, the wavelength is (300 m/s)/(10 Hz) = 30 m

I hope this helps! :)

8 0
2 years ago
Instead of rolling down the ramp over the step, imagine the ball falls off the back of the ramp directly to the ground. What is
lesya692 [45]

0J

According to the law of conservation of energy, the potential energy is converted to kinetic energy. Remember, potential energy is calculated using height and weight. If the ball is on the ground, height is 0.

8 0
3 years ago
Read 2 more answers
Friction between our feet and the surface we walk on is desirable. True False​
STALIN [3.7K]

Answer:

True

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • how does the composition of a mixture of hydrogen and oxygen differ of hydrogen and oxygen differ from the composition of a comp
    5·1 answer
  • I feel really isolated these days and wish I had more friends. I've chosen to put myself in new social situations to try to make
    11·1 answer
  • If Team 4 wants to increase the horizontal distance that the skittles are projected through the air but keep the height as close
    15·1 answer
  • You are looking down on a N = 24 turn coil in a magnetic field B = 1 T which points directly down into the screen. If the diamet
    8·1 answer
  • What was different about the fire Montag saw after leaving the river?
    7·1 answer
  • Sheila uses a 45N force on her bowling ball across a 15m lane. What work did she do on the bowling ball? Show your work.​
    15·1 answer
  • Someone can help me?
    12·1 answer
  • if two masses 5.2kg and 4.8kg are attached to ends of inextensible string passed over a friction less pulley then acceleration o
    13·1 answer
  • a body of mass 4 kg moves around a circle of radius 6 m with a constant speed of 12m/sec². calculate tw angular velocity and the
    14·1 answer
  • A machine has a mechanical advantage of 5. What force should be applied to the machine to make it apply 3000 N to an object? 0.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!