Which of the following best describes the modern definition of a constellation?
A) a region of the celestial sphere
B) a pattern of bright stars in the sky
C) a Greek mythological figure
D) a collection of stars that are near one another in space
E) a group of stars that all lie at about the same distance from Earth
A
You might also like to view...
A ball vibrates back and forth from the free end of an ideal spring having a spring constant of 20 N/m. If the amplitude of this motion is 0.30 m, what is the kinetic energy of the ball when it is 0.30 m from its equilibrium position?
A) 0.00 J B) 0.22 J C) 0.45 J D) 0.90 J E) 1.4 J
Intensity: Radiation of a single frequency reaches the upper atmosphere of the earth with an intensity of 1350 W/m2. What is the maximum value of the electric field associated with this radiation? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T ? m/A, ?0 = 8.85 × 10-12 C2/N ? m2)
A. 675.0 V/m B. 1604 V/m C. 1400 V/m D. 1350 V/m E. 1010 V/m
Photons behave like
A) waves. B) particles. C) both waves and particles. D) neither waves nor particles.
The difference between a DC and an AC generator is that
A. the DC generator has one unbroken slip ring. B. the AC generator has one unbroken slip ring. C. the DC generator has one slip ring split in two halves. D. the AC generator has one slip ring split in two halves. E. the DC generator has two unbroken slip rings.