The path of totality for a solar eclipse is swept out by the tip of the Moon's umbra as the umbra moves over Earth
a. True
b. False
Indicate whether the statement is true or false
True
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A series circuit consists of ac source, a 90-? resistor, a 0.80-H inductor, and an 80-?F capacitor
The frequency of the source is adjusted so that the capacitive reactance is equal to twice the inductive reactance. What is the frequency of the source? A) 14 Hz B) 13 Hz C) 16 Hz D) 17 Hz E) 19 Hz
Escape Speed: The value of g at the surface of the spherical Asteroid X is 0.0060 m/s2 and the escape velocity is 10.1 m/s. What is the mass of this asteroid? (G = 6.67 × 10-11 N ? m2/kg2)
A. 2.3 × 1016 kg B. 3.5 × 1012 kg C. 6.5 × 1015 kg D. 4.9 × 1014 kg E. 6.7 × 1013 kg
Why does the term "planet" have a different meaning when applied to brown dwarfs than in our solar system?
What will be an ideal response?
Components: Vector 
is along the +x-axis and vector 
is along the +y-axis. Which one of the following statements is correct with respect to these vectors?
A. The x component of vector 
is equal to the x component of vector 
.
B. The y component of vector 
is equal to the y component of vector 
.
C. The x component of vector 
is equal to the y component of vector 
.
D. The y component of vector 
is equal to the x component of vector 
.