Author Question: A farsighted person cannot see clearly objects that are closer to her eyes than 60.0 cm. Which ... (Read 61 times)

lak

  • Hero Member
  • *****
  • Posts: 546
A farsighted person cannot see clearly objects that are closer to her eyes than 60.0 cm.
 
  Which one of the following combinations represents the correct focal length and the refractive power of the contact lenses that will enable her to comfortably see the objects at a distance of 25.0 cm from her eyes? A) -42.9 cm, +2.33 diopters
  B) -42.9 cm, -2.33 diopters
  C) +42.9 cm, +2.33 diopters
  D) +42.9 cm, -2.33 diopters
  E) +60 cm, +42.9 diopters

Question 2

Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?
 
  A) The equivalent resistance is less than that of the smallest resistor.
  B) The equivalent resistance is equal to the average of the four resistances.
  C) The equivalent resistance is midway between the largest and smallest resistance.
  D) The equivalent resistance is more than the largest resistance.
  E) None of the other choices is correct.



wshriver

  • Sr. Member
  • ****
  • Posts: 318
Answer to Question 1

C

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

For a complete list of videos, visit our video library