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

Author Question: Hydrogen atoms can emit four lines with visible colors from red to violet. These four visible lines ... (Read 145 times)

anjilletteb

  • Hero Member
  • *****
  • Posts: 569
on: Jul 29, 2018
Hydrogen atoms can emit four lines with visible colors from red to violet. These four visible lines emitted by hydrogen atoms are produced by electrons
 
  A) that start in the n = 2 level.
  B) that end up in the n = 2 level.
  C) that end up in the n = 3 level.
  D) that end up in the ground state.
  E) that start in the ground state.

Question 2

A concave mirror has a focal length of 20 cm. A paraxial beam of light coming from a distant object forms its image at the focal point.
 
  If a small plane mirror is placed at the center of curvature with its reflecting side facing the focal point, where is the final image? A) 3 cm in front of the mirror
  B) 40 cm in front of the mirror
  C) 50 cm in front of the mirror
  D) 60 cm in front of the mirror
  E) 70 cm in front of the mirror


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gstein359

  • Sr. Member
  • ****
  • Posts: 293
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


anjilletteb

  • Member
  • Posts: 569
Reply 2 on: Jul 29, 2018
Gracias!

jackie

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

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?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Tracking atoms through photosynthesis. Tracking atoms through photosynthesis.
The atoms and planes defining Ψ. The atoms and planes defining Ψ.
Photograph taken during a laparoscopic procedure. The uterus is visible below the probe, the ovary ... Photograph taken during a laparoscopic procedure. The uterus is visible below the probe, the ovary ...
Contrasting Colors (Part 2) Contrasting Colors (Part 2)
Atoms Atoms
A land snail (Helix aspersa) with the opening that leads to its lung visible at the left. A land snail (Helix aspersa) with the opening that leads to its lung visible at the left.
Video: DNA Sequences - Dideoxy Sequencing

For a complete list of videos, visit our video library