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

Author Question: A double-concave lens has equal radii of curvature of 15.1 cm. An object placed 14.2 cm from the ... (Read 17 times)

viki

  • Hero Member
  • *****
  • Posts: 525
on: Jul 29, 2018
A double-concave lens has equal radii of curvature of 15.1 cm. An object placed 14.2 cm from the lens forms a virtual image 5.29 cm from the lens. What is the index of refraction of the lens material?
 
  A) 1.90
  B) 1.98
  C) 1.82
  D) 1.77

Question 2

If you rub two transparency sheets with tissue and then hold the two transparency sheets at rest a short distance apart, the electromagnetic forces they exert on each other will be
 
  A) magnetic but not electric. B) electric but not magnetic.
  C) zero. D) both electric and magnetic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Amiracle

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

A

Answer to Question 2

B


viki

  • Member
  • Posts: 525
Reply 2 on: Jul 29, 2018
Wow, this really help

frankwu0507

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

The vertebrate single-lens eye. The vertebrate single-lens eye.
Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. ( Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. (
CONCAVE SLIDE CONCAVE SLIDE
The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ... The Z lens, which was developed by Zaidel to study functional asymmetry in split-brain patients. It ...
Examples of drawings in each category of two object forms Examples of drawings in each category of two object forms
How do i calulate an object of that is dropped from (g=9.80m/s2) for 5 s before hitting the ... How do i calulate an object of that is dropped from (g=9.80m/s2) for 5 s before hitting the ...
Video: Inflammatory response Animation

For a complete list of videos, visit our video library