A physicist claims that she has found a new particle with a mass 200 000 times the mass of the proton (1.67 × 10^-27 kg) and a charge of 3.20 × 10^-19 C. If she is correct, such a particle traveling in a circle in a uniform 5.00 T magnetic field at a velocity of 2 500 m/s will have a radius of
a. 0.261 m.
b. 0.522 m.
c. 1.04 m.
d. 3.27 m.
e. 3.13 × 10^26 m.
B
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Phase Angles: A 200-? resistor, a 40-mH inductor, and a 2.0-?F capacitor are connected in series with a 120-V rms source at 1.0 kHz. What is the phase angle of this circuit?
A. 49° B. 90° C. 41° D. 0° E. 45°
Suppose that Earth's atmosphere had no greenhouse gases. Then Earth's average surface temperature would be
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Which of the following statements is true?
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The distance between adjacent galaxies in a typical cluster is about ________ times the size of a typical galaxy
A) two or three B) five or less C) ten to twenty D) a hundred E) a thousand