Vision Problems: A nearsighted person has a near point of 12 cm and a far point of 17 cm. If the corrective lens is 2.0 cm from his eye, (a) what lens power will enable this person to see distant objects clearly, and (b) what then will be the new near point of his eye?
What will be an ideal response?
(a) -6.7 diopters (b) 30 cm in front of the lens
Physics & Space Science
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Determine the values of (hkl), the interplanar spacing (dhkl), and the angles of diffraction (?) for the first eight peaks for BCC iron with a lattice parameter of 0.287 nm, when using molybdenum K? radiation with a wavelength of 0.0711 nm.
What will be an ideal response?
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The Trojan asteroids orbit the Sun at an average distance of ________.
A. 60 behind B. 60 ahead C. 100,000,000 miles D. 5.2 AU
Physics & Space Science
Which of the four Galilean moons is not differentiated?
A) Io B) Europa C) Ganymede D) Callisto E) None of the above. All the moons are differentiated.
Physics & Space Science
Our Sun will likely undergo a nova event in about 5 billion years
Indicate whether the statement is true or false
Physics & Space Science