What power (in diopters) of corrective lens is required to correct the vision of a myopic eye whose far point is at 170 cm?
What will be an ideal response?
-0.59 diopters
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The practice of science: In what ways does the modern practice of science establish positive feedback (see table 3.2 ) to encourage further discoveries?
Can you identify elements of the historical accounts of Copernicus, Tycho, Kepler, and Galileo that provide an example of positive feedback?
A body is oscillating up and down at the end of a spring. Let's consider when the body is at the top of its up-and-down motion.The net force on the body has its largest magnitude
a. True b. False Indicate whether the statement is true or false
Applying the Newton's version of Kepler's third law (or the orbital velocity law) to a star orbiting 40,000 light-years from the center of the Milky Way Galaxy allows us to determine
A) the total mass of the entire Milky Way Galaxy. B) the mass of the black hole thought to reside in the center of the galaxy. C) the percentage of the galaxy's mass that is made of dark matter. D) the mass of the Milky Way Galaxy that lies within 40,000 light-years of the galactic center.
If you shout across a canyon and the echo returns in four seconds, how far away is the other side? (Velocity of sound in air is 300 m/s)
a. 150 b. 300 c. 600 d. 1200 e. 2400 meters