Question

An electron orbits in a 3.8 mT field with angular momentum 8.6×10−26kgm2/s. What is the diameter...

An electron orbits in a 3.8 mT field with angular momentum 8.6×10−26kgm2/s.

What is the diameter of the orbit? (Express your answer to two significant figures and include the appropriate units.-> meters)

0 0
Add a comment Improve this question Transcribed image text
Answer #1

the electron makes an orbit in a magnetic Field of radius r = mv/eB
The
angular momentum of a particle in an orbit is L = mvr. So, multiplying the expression for the radius of the orbit by r gives
r^2 = mvr/eB = L/eB

r = (L/eB)^1/2

r = (8.6*10^-26/(1.602 * 10^-19*3.8*10^-3))^1/2 = 0.011885 m
or
r = 1.2 cm

DIameter = 2.4 cm or 0.02377 m

Add a comment
Know the answer?
Add Answer to:
An electron orbits in a 3.8 mT field with angular momentum 8.6×10−26kgm2/s. What is the diameter...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • Part A Calculate the magnitude of the maximum orbital angular momentum Lmax for an electron in...

    Part A Calculate the magnitude of the maximum orbital angular momentum Lmax for an electron in a hydrogen atom for states with a principal quantum number of 9. Express your answer in units of ℏ to three significant figures. Part B Calculate the magnitude of the maximum orbital angular momentum Lmax for an electron in a hydrogen atom for states with a principal quantum number of 32. Express your answer in units of ℏ to three significant figures. Part C...

  • A satellite of mass 5550 kg orbits the Earth and has a period of 6610 s...

    A satellite of mass 5550 kg orbits the Earth and has a period of 6610 s . Determine the radius of its circular orbit. Express your answer using three significant figures and include the appropriate units. Determine the magnitude of the Earth's gravitational force on the satellite. Express your answer using three significant figures and include the appropriate units. Determine the altitude of the satellite. Express your answer using three significant figures and include the appropriate units.

  • A satellite of mass 5550 kg orbits the Earth and has a period of 6610 s...

    A satellite of mass 5550 kg orbits the Earth and has a period of 6610 s . Determine the radius of its circular orbit. Express your answer using three significant figures and include the appropriate units. Determine the magnitude of the Earth's gravitational force on the satellite. Express your answer using three significant figures and include the appropriate units. Determine the altitude of the satellite. Express your answer using three significant figures and include the appropriate units.

  • What is the angular momentum of a 3.2-kg uniform cylindrical grinding wheel of radius 25 cm...

    What is the angular momentum of a 3.2-kg uniform cylindrical grinding wheel of radius 25 cm when rotating at 1300 rpm ? Express your answer using three significant figures and include the appropriate units. How much torque is required to stop it in 8.0 s ? Express your answer using three significant figures and include the appropriate units.

  • What is the angular momentum of a 0.190 kg ball rotating on the end of a...

    What is the angular momentum of a 0.190 kg ball rotating on the end of a thin string in a circle of radius 1.00 m at an angular speed of 10.1 rad/s ? Express your answer using three significant figures and include the appropriate units.

  • A 30.0-cm long solenoid 1.25 cm in diameter is to produce a field of 4.60 mt...

    A 30.0-cm long solenoid 1.25 cm in diameter is to produce a field of 4.60 mt at its center Part A How much current should the solenoid carry it it has 910 turns of the wire? Express your answer using three significant figures and include the appropriate units. TIẢ + + a ? Value Units Submit Request Answer Provide Feedback

  • A 34.0-cm long solenoid 1.25 cm in diameter is to produce a field of 4.50 mT...

    A 34.0-cm long solenoid 1.25 cm in diameter is to produce a field of 4.50 mT at its center. How much current should the solenoid carry if it has 985 turns of the wire? Express your answer using three significant figures and include the appropriate units. HA o ? I = Value A Submit Request Answer

  • Two 1.60-cm-diameter disks spaced 1.50 mm apart from a parallel-plate capacitor. The electric field between the...

    Two 1.60-cm-diameter disks spaced 1.50 mm apart from a parallel-plate capacitor. The electric field between the disks is 5.20 times 10^5 V/m. What is the voltage across the capacitor? Express your answer to two significant figures and include the appropriate units. An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.40 times 10^7 m/s. What was the electron's speed as it left the negative plate? Express your answer to two significant figures...

  • 28.20 Two 2.50-cm-diameter disks spaced 2.10 mm apart form a parallel-plate capacitor. The electric field between...

    28.20 Two 2.50-cm-diameter disks spaced 2.10 mm apart form a parallel-plate capacitor. The electric field between the disks is 4.50×105 V/m . A) What is the voltage across the capacitor? Express your answer to two significant figures and include the appropriate units. B) An electron is launched from the negative plate. It strikes the positive plate at a speed of 2.00×107 m/s . What was the electron's speed as it left the negative plate? Express your answer to two significant...

  • A 6.0 A current is charging a 1.4 -cm-diameter parallel-plate capacitor. What is the magnetic field...

    A 6.0 A current is charging a 1.4 -cm-diameter parallel-plate capacitor. What is the magnetic field strength at a point 2.2 mm radially from the center of the wire leading to the capacitor? Express your answer to two significant figures and include the appropriate units. B = What is the magnetic field strength at a point 2.2 mm radially from the center of the capacitor? Express your answer to two significant figures and include the appropriate units. B =

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT