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 72 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
Gracias!

triiciiaa

  • Member
  • Posts: 349
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Visible Radiation Visible Radiation
Chemical Laboratory Equipment Chemical Laboratory Equipment
Darwin’s finches: Adaptive radiation of bill types. Darwin’s finches: Adaptive radiation of bill types.
Light Waves in the Electromagnetic Spectrum Light Waves in the Electromagnetic Spectrum
Physics - Pressure, Density, Pascal's Principle Physics - Pressure, Density, Pascal's Principle
Physics Physics
Video: Major Elements in Biological Molecules: Nucleic acids

For a complete list of videos, visit our video library