« previous next »

Author Question: A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis. If ... (Read 75 times)

krzymel

  • Hero Member
  • *****
  • Posts: 548
on: Jul 28, 2018
A concave mirror forms a real image at 25.0 cm from the mirror surface along the principal axis. If the corresponding object is at a 20.0-cm distance, what is the mirror's focal length?
 a. 1.43 cm
  c. 7.14 cm
  b. 16.7 cm
  d. 11.1 cm

Question 2

Which one of the following processes of heat transfer requires the presence of a fluid?
 a. conduction
  c. convection
  b. radiation
  d. None of the choices are valid.


Ahernandez18

  • Sr. Member
  • ****
  • Posts: 361
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

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?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

What is real and what is an illusion? What is real and what is an illusion?
Simple harmonic motion also forms the basis for understanding mechanical waves Simple harmonic motion also forms the basis for understanding mechanical waves
Microscopic image of prostate cancer. The tissue on the right is somewhat normal; the tissue on the ... Microscopic image of prostate cancer. The tissue on the right is somewhat normal; the tissue on the ...
How Precipitation Forms How Precipitation Forms
Precession: Earth’s axis rotates, or “wobbles” Precession: Earth’s axis rotates, or “wobbles”
Prove that each of the following real functions f has a discontinuity. For each function, ... Prove that each of the following real functions f has a discontinuity. For each function, ...
Video: Vasectomy

For a complete list of videos, visit our video library