Vision Problems: What is the focal length of a contact lens that will allow a person with a near point of 125 cm to read a physics book held 25.0 cm from his eyes?
A. -100 cm
B. -31.3 cm
C. 10.2 cm
D. 20.8 cm
E. 31.3 cm
Answer: E
You might also like to view...
You roll a ball off a table and at the same time drop a second ball straight down from the edge of table. The second ball reaches the ground ____________ the first ball reaches the ground
a. before b. at the same time that c. after d. before or after, depending on the masses, e. cannot be determined
Which of the following are relatively unchanged fragments from the early period of planet building in the solar system?
A) the moons of Mars B) asteroids C) Kuiper belt comets D) Oort cloud comets E) all of the above
Which of the following best summarizes current understanding of other extinctions in Earth's past history?
What will be an ideal response?
Which of the following energy forms is associated with an object in motion?
a. potential energy b. elastic potential energy c. nonmechanical energy d. kinetic energy