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

Author Question: A car moving at a constant speed goes around a curve of 400 ft radius and then goes around a second ... (Read 164 times)

savannahhooper

  • Hero Member
  • *****
  • Posts: 576
on: Jul 28, 2018
A car moving at a constant speed goes around a curve of 400 ft radius and then goes around a second curve of 200 ft radius. The centripetal force acting on the car as it goes around the 200 ft radius curve is ___________ the value of the centripetal force acting on the car as it goes around the 400 ft radius curve.
 a. one quarter
  b. one half
  c. the same as
  d. twice
  e. four times

Question 2

What is stimulated emission?
 a. The interaction of a photon with an excited atom to cause it to emit another photon of the same wavelength.
  b. Emission in response to an electric discharge through a gas instead of just random light emission.
  c. Any excitation of atoms that later results in photons being given off by a substance.
  d. Stimulation of the random action of electrons and photons creating scattered emission of light.
  e. Emission of photons without requiring electron shell jumps.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mmj22343

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

a


savannahhooper

  • Hero Member
  • *****
  • Posts: 576
Reply #2 on: Jul 28, 2018
Thank you!


mmj22343

  • Sr. Member
  • ****
  • Posts: 297
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

Relationship between fruit radius and beak length in populations of native and introduced species of Relationship between fruit radius and beak length in populations of native and introduced species of
Circular petrissage to forehead. Use the thumbs moving in counterclockwise circles. The movement is ... Circular petrissage to forehead. Use the thumbs moving in counterclockwise circles. The movement is ...
The Kuznets Curve The Kuznets Curve
What is the value of the equilibrium constant, K, at 25°C for the reaction? What is the value of the equilibrium constant, K, at 25°C for the reaction?
Withr this assumption, the maximum radius of M+ is Withr this assumption, the maximum radius of M+ is
The charge for telephone calls T is partly constant and partly varies with the number N of ... The charge for telephone calls T is partly constant and partly varies with the number N of ...
Video: Summary of glucose catabolism

For a complete list of videos, visit our video library