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

Author Question: Light can travel to Earth from a distant star, but sound cannot. Why is this? a. Light is an ... (Read 89 times)

wrbasek0

  • Hero Member
  • *****
  • Posts: 560
on: Jul 28, 2018
Light can travel to Earth from a distant star, but sound cannot. Why is this?
 a. Light is an electromagnetic wave, and sound requires a medium.
  b. The Sun does not make sound.
  c. Light is a longitudinal wave, and sound is a transverse wave.
  d. The statement is false; both light and sound can travel in empty space.

Question 2

The number of states in the He+ ion corresponding to the principle quantum number n = 5 are
 a. 18
  b. 25
  c. 50
  d. 9
  e. 11


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

upturnedfurball

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 28, 2018
Answer to Question 1

a

Answer to Question 2

c


wrbasek0

  • Member
  • Posts: 560
Reply 2 on: Jul 28, 2018
Excellent

nothere

  • Member
  • Posts: 324
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Tobacco depletes the body of vitamins A, C, and E, which can result in any of the following: dry hair, dry skin, dry eyes, poor growth, night blindness, abscesses, insomnia, fatigue, reproductive system problems, sinusitis, pneumonia, frequent respiratory problems, skin disorders, weight loss, rickets, osteomalacia, nervousness, muscle spasms, leg cramps, extremity numbness, bone malformations, decayed teeth, difficulty in walking, irritability, restlessness, profuse sweating, increased uric acid (gout), joint damage, damaged red blood cells, destruction of nerves, infertility, miscarriage, and many types of cancer.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

The average adult has about 21 square feet of skin.

Look-Alike and Sound-Alike Drug Names Look-Alike and Sound-Alike Drug Names
A typical 12 volt test light. A typical 12 volt test light.
Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ... Touch the test light to the negative (–) terminal of the battery or a good engine ground to check ...
Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ... Earth scientists have devised a scheme to divide the planet’s natural history into distinct time ...
Distribution of Earth's Water Distribution of Earth's Water
A microwave telescope “sees” microwave light coming from all directions in the sky… A microwave telescope “sees” microwave light coming from all directions in the sky…
Video: Deafness Culture

For a complete list of videos, visit our video library