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

Author Question: The process by which molecules escape from a solid directly into the gas phase is called A) ... (Read 22 times)

nelaaney

  • Hero Member
  • *****
  • Posts: 560
on: Jul 27, 2018
The process by which molecules escape from a solid directly into the gas phase is called
 
  A) gasification
  B) evaporation
  C) condensation
  D) sublimation

Question 2

Briefly explain how we can use spectral lines to determine an object's radial motion. Can we also learn the object's tangential motion (across our line of sight) from its spectral lines?
 
  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

abro1885

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

D

Answer to Question 2

By comparing the wavelength of the spectral lines in the object's spectrum to the rest wavelengths of the same lines, we measure the Doppler shift. This tells us the object's radial motion: A shift toward shorter wavelength means the object is moving toward us, and a shift to longer wavelength means it is moving away from us. We cannot learn anything about the object's tangential motion from its spectral lines because this does not affect the line positions.


nelaaney

  • Member
  • Posts: 560
Reply 2 on: Jul 27, 2018
Excellent

Chelseyj.hasty

  • Member
  • Posts: 319
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

Metabolic Pathways During the Fasting Phase and Absorptive Phase of Metabolism Metabolic Pathways During the Fasting Phase and Absorptive Phase of Metabolism
Cross functional Process Flow Diagram Cross functional Process Flow Diagram
Continue the process until the canister is empty and the engine stalls. Remove the cleaning ... Continue the process until the canister is empty and the engine stalls. Remove the cleaning ...
Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell. Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell.
A square matrix P is called a permutation matrix if each row and column of P contains exactly ... A square matrix P is called a permutation matrix if each row and column of P contains exactly ...
Cancer cells can move to new locations in the body, a process called metastasis Cancer cells can move to new locations in the body, a process called metastasis
Video: Bone cells and tissues - tissue composition and cells

For a complete list of videos, visit our video library