The isotope 64Zn has a nuclear radius of 4.8 × 10^?15 m. Which of the following is the mass number of an isotope for which the nuclear radius is 3.6 × 10^?15 m?
a. 3
b. 1
c. 9
d. 27
e. 48
d
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Vision Problems: A farsighted boy has a near point at 2.3 m and requires contact lenses to correct his vision to the normal near point. What is the correct choice of lens power for the contact lenses?
A. -0.28 diopters B. +0.28 diopters C. -3.6 diopters D. +3.6 diopters E. +1.8 diopters
Which planet by itself contains the majority of mass of all the planets?
A) Jupiter B) Saturn C) Earth D) Venus E) Uranus
The lowest A on a piano has a frequency of 27.5 Hz. If the tension in the 2.00-m string is 308 N, and one-half wavelength occupies the string, what is the mass of the wire?
A. 0.025 kg B. 0.049 kg C. 0.051 kg D. 0.081 kg E. 0.037 kg
You hear a musician playing a series of notes of increasing frequency. As the frequency increases, the wave speed
A. decreases. B. stays the same. C. increases.