A 75 g block is placed into oscillation of amplitude 22 cm as it hangs from a vertical spring. If it observed to have a maximum speed of 14 m/s as it travels through the equilibrium position, what is the spring constant?
A. 300 N/m
B. 22 N/m
C. 4.8 N/m
D. 1200 N/m
A. 300 N/m
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GPS stands for
a. the metric system of measurement. b. grams per second. c. Global Positioning System. d. a space shuttle. e. none of the above.
Two-Source Interference of Sound: Two in-phase loudspeakers are placed along a wall and are separated by a distance of 4.00 m. They emit sound with a frequency of 514 Hz. A person is standing away from the wall, in front of one of the loudspeakers. What is the closest distance from the wall the person can stand and hear destructive interference? The speed of sound in air is 343 m/s.
A. 0.34 m B. 0.37 m C. 0.73 m D. 1.2 m E. 1.6 m
The initial rise off the main sequence in stage 8 comes from gravitational energy of the contracting helium core
Indicate whether the statement is true or false
A 120-V rms voltage at 2000 Hz is applied to a 6.0-mH inductor, a 2.0-?F capacitor and a 200-? resistor. What is the rms value of the current in this circuit?
A) 1.5 A B) 0.48 A C) 2.5 A D) 3.5 A E) 0.59 A