A radioactive isotope of atomic number Z emits a beta-minus particle, and then the daughter nucleus emits a gamma ray. What is the atomic number of the resulting nucleus after both processes?
A) Z - 3 B) Z + 1 C) Z - 2 D) Z - 1
B
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An ideal solenoid of radius a has n turns per unit length and current I. The magnetic flux ?B through any circular area of radius a inside the solenoid, centered on and perpendicular to the solenoid axis, is
A.
.B.
.C.
D.
E.
A particle (charge = 5.0 ?C) is released from rest at a point x = 10 cm. If a 5.0-?C charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
a. 1.6 J b. 2.0 J c. 2.4 J d. 1.2 J e. 1.8 J
A uniformly charged rod (length = 2.0 m, charge per unit length = 5.0 nC/m) is bent to form one quadrant of a circle. What is the magnitude of the electric field at the center of the circle?
a. 62 N/C b. 56 N/C c. 50 N/C d. 44 N/C e. 25 N/C
Sound A has a high pitch and sound B has a low pitch. Which of the following statements about these two sounds are correct? (There could be more than one correct choice.)
A) The wavelength of A is longer than the wavelength of B. B) The period of A is shorter than the period of B. C) The frequency of A is greater than the frequency of B. D) Sound B travels faster than sound B through air. E) The amplitude of A is larger than the amplitude of B.