This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: In her physics laboratory, Mathilda shines electromagnetic radiation on a material and collects ... (Read 42 times)

Evvie72

  • Hero Member
  • *****
  • Posts: 519
on: Jul 29, 2018
In her physics laboratory, Mathilda shines electromagnetic radiation on a material and collects photoelectric data to determine Planck's constant.
 
  She measures a stopping potential of 5.82 V for radiation of wavelength 100 nm, and 17.99 V for radiation of wavelength 50.0 nm. (1 eV = 1.60  10-19 J, c = 3.00  108 m/s)
  (a) Using Mathilda's data, what value does she determine for Planck's constant?
  (b) What is the work function of the material Mathilda is using, in electron-volts?

Question 2

An ac generator with a total resistance of 12  contains 100 flat loops of wire, each with an area of 0.090 m2. The loops rotate at 60 rev/s in a magnetic field of magnitude 0.50 T. What is the maximum possible induced current?
 
  A) 0.14 kA B) 23 A C) 46 A D) 0.28 kA


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

briseldagonzales

  • Sr. Member
  • ****
  • Posts: 303
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 6.49  10-34 J  s (b) 6.35 eV

Answer to Question 2

A


Evvie72

  • Member
  • Posts: 519
Reply 2 on: Jul 29, 2018
Excellent

bdobbins

  • Member
  • Posts: 326
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

The electromagnetic spectrum The electromagnetic spectrum
The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being
Radiation Side Effects, Healing Time, and Intervention Radiation Side Effects, Healing Time, and Intervention
Physics Physics
Physics Physics
Physics Physics
Video: Splitting of Sugar, Oxidation/ Reduction & ATP Generation

For a complete list of videos, visit our video library