Two isotopes of uranium have the same
a. mass number
b. neutron number
c. atomic number
d. nucleon number
e. nucleon number and neutron number
c
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In an RLC circuit, the resistance is 10. ohms, the capacitive reactance is 30. ohms, and the inductive reactance is 50. ohms. What is the circuit impedance?
A) 10. ? B) 22. ? C) 90. ? D) 63. ? E) 81. ?
Simple Pendulum: The period of a simple pendulum that is 1.00 m long on another planet is 1.66 s. What is the acceleration due to gravity on this planet if the mass of the pendulum bob is 1.5 kg?
A. 14.3 m/s2 B. 13.3 m/s2 C. 15.7 m/s2 D. 17.2 m/s2
Light from a He-Ne laser of wavelength 633 nm passes through a circular aperture. The resulting pattern is observed on a screen 4.0 m behind the aperture, where the width of the central bright circle is 1.1 cm. What is the diameter of the hole?
A) 4700 ?m B) 32,000 ?m C) 9.8 ?m D) 560 ?m
An incandescent lightbulb is rated at 100 Watts when plugged into a 110 V-rms household outlet. Calculate the resistance of the filament and the rms current
a. 12.2?, 0.91 A (rms) b. 10?, 1.0 A (rms) c. 110?, 1.0 A (rms) d. 121?, 0.91 A (rms) e. 11?, 1.1 A (rms)