« previous next »

Author Question: Which of the following cannot travel in a vacuum? A) a light wave B) a sound wave C) a radio ... (Read 90 times)

123654777

  • Hero Member
  • *****
  • Posts: 585
on: Jul 29, 2018
Which of the following cannot travel in a vacuum?
 
  A) a light wave
  B) a sound wave
  C) a radio wave
  D) all can
  E) none can

Question 2

Compared to ultraviolet waves, the wavelength of infrared waves is
 
  A) shorter.
  B) the same.
  C) longer.


Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: B

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

123654777

  • Hero Member
  • *****
  • Posts: 585
Reply #2 on: Jul 29, 2018
TY


Amiracle

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified. An ECG strip showing a normal sinus rhythm with the P wave, QRS complex, and T wave identified.
Light rays coming from an object to the retina. Light rays coming from an object to the retina.
Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ... Sample Diet for a College-Aged Female Weighing 132 Pounds, Assuming Light to Moderate Daily ...
The “first wave” of the U.S. women’s movement met enormous opposition. The women in this 1920 ... The “first wave” of the U.S. women’s movement met enormous opposition. The women in this 1920 ...
Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ... Electrophoresis gel in a densitometer. (a) The green light from the slit light source is visible ...
If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is If y = 0.02 sin (30x - 400t) (SI units), the velocity of the wave is
Video: Action potentials - electrical characteristics and generation

For a complete list of videos, visit our video library