« previous next »

Author Question: How does the speed (in a vacuum) of a high-frequency electromagnetic wave compare with a ... (Read 32 times)

armygirl

  • Hero Member
  • *****
  • Posts: 556
on: Jul 27, 2018
How does the speed (in a vacuum) of a high-frequency electromagnetic wave compare with a low-frequency electromagnetic wave?
 
  A) the lower-frequency wave has the higher speed because speed is inversely related to frequency
  B) the two waves have the same speed because the speed of light is constant
  C) the lower-frequency wave has the higher speed because it has the longest wavelength
  D) the higher-frequency wave has the higher speed

Question 2

Big Mike throws a baseball straight up and it eventually falls back to him. When the ball was at its highest point, what was its velocity and what was its acceleration? (remember to include magnitude and direction)
 
  What will be an ideal response?


sierrahalpin

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 27, 2018
Answer to Question 1

B

Answer to Question 2

Velocity was zero, acceleration was 9.8 m/s2 downward.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

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.

Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

Visual Angle and Spatial Frequency Visual Angle and Spatial Frequency
A typical port fuel-injection system squirts fuel into the low pressure (vacuum) of the intake ... A typical port fuel-injection system squirts fuel into the low pressure (vacuum) of the intake ...
The electromagnetic spectrum. Ionizing radiation is only a small portion of the electromagnetic ... The electromagnetic spectrum. Ionizing radiation is only a small portion of the electromagnetic ...
Eggs are an excellent source of protein, but egg yolks are high in cholesterol Eggs are an excellent source of protein, but egg yolks are high in cholesterol
Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ... Astronaut Rachel leaves Earth in a spaceship at a speed of 0.960c relative to an observer on ...
The frequency distribution of the allele in Southeast Asia and the Pacific Islands The frequency distribution of the allele in Southeast Asia and the Pacific Islands
Video: Egg and Sperm Formations in Animals Animation

For a complete list of videos, visit our video library