This diagram represents a simplified model of the celestial sphere. The unlabeled circle that is highlighted in purple represents
A) the celestial equator.
B) the meridian.
C) the ecliptic.
D) the spring equinox.
A) the celestial equator.
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Reactance: What capacitance will have the same reactance as a 100-mH inductance of both of them are in a 120-V 60-Hz circuit?
Fill in the blank(s) with the appropriate word(s).
Two cylinders made of the same material roll down a plane inclined at an angle ? with the horizontal. Each travels the same distance. The radius of cylinder B is twice the radius of cylinder A. In what order do they reach the bottom?
a. A reaches the bottom first because it has the greater acceleration. b. A reaches the bottom first because it has a smaller rotatinal inertia. c. B reaches the bottom first because is experiences a larger torque. d. B reaches the bottom first because it travels a larger distance in one rotation. e. They both reach the bottom at the same time, because each has the same linear acceleration.
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.
In order for two waves to interfere completely destructively, they must have the same amplitude
Indicate whether the statement is true or false