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

Author Question: A convex spherical mirror with a radius of 50 cm has a 4.0 cm tall object placed 100 cm in front of ... (Read 60 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 29, 2018
A convex spherical mirror with a radius of 50 cm has a 4.0 cm tall object placed 100 cm in front of it. What is the position of the image relative to the mirror?
 
  A) 25 cm behind the mirror
  B) 20 cm behind the mirror
  C) 25 cm in front of the mirror
  D) 100 cm in front of the mirror
  E) 20 cm in front of the mirror

Question 2

A wire of resistivity  must be replaced in a circuit by a wire of the same material but four times as long. If, however, the total resistance is to remain as before, the diameter of the new wire must
 
  A) be two times the original diameter.
  B) be the same as the original diameter.
  C) be one-fourth the original diameter.
  D) be one-half the original diameter.
  E) be four times the original diameter.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ilianabrrr

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

A


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 29, 2018
Excellent

matt95

  • Member
  • Posts: 317
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

heart model front heart model front
Pupil Assessment, Move Penlight directly in Front of Pupil Pupil Assessment, Move Penlight directly in Front of Pupil
Mirror Neurons and Speech Mirror Neurons and Speech
A basic principle of symbolic interactionism is that meaning is not inherent in an object or event, ... A basic principle of symbolic interactionism is that meaning is not inherent in an object or event, ...
Occluded front Occluded front
Object Perception and Boundaries Object Perception and Boundaries
Video: Gastrin (gastric emptying) & Secretin (buffering gastric acid)

For a complete list of videos, visit our video library