In a RLC circuit, the values of the inductance and capacitance are both halved. In comparison with the resonance frequency of the original circuit, the new resonant frequency will be
A) the same as before.
B) reduced to one-half the original value.
C) reduced to one-quarter the original value.
D) increased by a factor of two.
E) increased by a factor of four.
D
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A 6.0-kg object, initially at rest in free space, "explodes" into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this explosion?
a. 2.4 kJ b. 2.9 kJ c. 2.0 kJ d. 3.4 kJ e. 1.2 kJ
The earliest evidence for life on Earth dates to
A) about 4.5 billion years ago. B) about 3.8 billion years ago. C) about 2 billion years ago. D) about 570 million years ago. E) about 65 million years ago.
An airplane with a wingspan of 60.0 m flies parallel to the Earth's surface at a point where the downward component of the Earth's magnetic field is 0.400 × l0-4 T. If the induced potential between wingtips is 0.600 V, what is the plane's speed?
a. 338 m/s c. 250 m/s b. 375 m/s d. 417 m/s
What is a CCD, and how does it work? Why is it replacing film?
What will be an ideal response?