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

Author Question: If a surface has a work function of 1.5 eV and photons of energy 2.7 eV are shone on the surface, ... (Read 77 times)

imowrer

  • Hero Member
  • *****
  • Posts: 514
on: Jul 29, 2018
If a surface has a work function of 1.5 eV and photons of energy 2.7 eV are shone on the surface, what is a possible kinetic energy of the electrons emitted from the surface?
 
  A)
 
  3.0 eV
  B)
 
  2.0 eV
  C)
 
  4.0 eV
  D)
 
  1.0 eV
  E)
 
  No electrons are emitted.

Question 2

An element has an atomic mass number of 14 and atomic number 6. (a) How many protons does it have? (b) How many neutrons does it have?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sabina576

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

(a) 6
(b) 8


imowrer

  • Member
  • Posts: 514
Reply 2 on: Jul 29, 2018
Wow, this really help

vickyvicksss

  • Member
  • Posts: 351
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

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.

Some energy interconversions in living organisms Some energy interconversions in living organisms
Activation energy graph Activation energy graph
The Journey to Work, Philadelphia, 1850 The Journey to Work, Philadelphia, 1850
Rich Energy Deposits Rich Energy Deposits
Derivative of Reciprocal Trig Function Derivative of Reciprocal Trig Function
Trigonometric Function Question Trigonometric Function Question
Video: Introduction to Insulin

For a complete list of videos, visit our video library