Radioactivity Basics: A nucleus 
X undergoes one alpha decay followed by 3 beta-minus decays.(a) What is the resulting nucleus in terms of M and N?(b) If there had been 3 beta-plus decays instead of the beta-minus decays, what would have been the resulting nucleus in terms of M and N?
What will be an ideal response?
(a) 
X (b) 
X
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A 1-kg ball dropped from 2 m rebounds only 1.5 m after hitting the ground. The amount of energy converted to heat is about
A) 0.5 J. B) 1.0 J. C) 1.5 J. D) 2.0 J. E) more than 2.0 J.
In terms of the wavelength of light in soapy water, what is the minimum thickness of soap film that will reflect a given wavelength of light?
A) one-fourth wavelength B) one-half wavelength C) one wavelength D) two wavelengths E) there is no minimum thickness
What is 34 + ( 4 ) × (1.2465 ) written with the correct number of significant figures?
A) 39.0 B) 38.99 C) 4 × 101 D) 39 E) 38.986
Dielectrics: A 12.6-µF isolated capacitor is constructed with Teflon, having a dielectric constant of 2.1, between the plates. The capacitor is initially charged to 1.5 volts, and then the Teflon is removed.(a) How much excess charge was originally stored on the plates of the capacitor?(b) After removing the Teflon, what is the potential difference across the capacitor plates?
Fill in the blank(s) with the appropriate word(s).