The circuit below contains three 100-watt light bulbs and a capacitor. The emf ? = 110V. The capacitor is fully charged. Which light bulb(s) is(are) dimmest?
A. A
B. B
C. C
D. A and B
E. All three are equally bright (or dim).
Answer: C
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Today the Sun appears to be located in the middle of the constellation Virgo. Therefore, tomorrow the Sun will be in the constellation
A) Libra. B) Virgo. C) Leo. D) Sagittarius.
Galileo is credited with designing the first reflector telescope
Indicate whether the statement is true or false
When a charged capacitor is connected to an inductor, the value of the charge on the capacitor oscillates and so does the current in the circuit
What changes in the current would take place if the same capacitor, with the same initial charge, is connected to a inductor with a larger inductance? A) Both the period of oscillation of the current and its maximum value would increase. B) The period of oscillation of the current would stay the same but its maximum value would increase. C) The period of oscillation of the current would decrease but its maximum value would remain the same. D) The period of oscillation of the current would increase but its maximum value would remain the same. E) Both the period of oscillation of the current and its maximum value would decrease.
A singly charged 9Be ion is accelerated from rest through a potential difference of 8000 V. The ion is then sent into a mass spectrometer where the radius of the path is 29 cm. What is the magnetic field in the spectrometer?
A. 0.27 T B. 0.13 T C. 0.067 T D. 0.0028 T E. 0.00019 T