Current understanding holds that a galaxy's type (spiral, elliptical, or irregular) ________
A) may either be a result of the mass of the protogalactic cloud that formed it or the result of the heavy element abundance in that cloud
B) is always determined by the angular momentum of the protogalactic cloud that formed it
C) is determined by whether the galaxy is located in a cluster where collisions are likely or outside a cluster where collisions are less likely
D) may either be the result of conditions in the protogalactic cloud that formed it or the result of later interactions with other galaxies
D
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During which step in the above figure would you take into consideration visual consistency and branding specifications?
A. Step 3 B. Step 4 C. Step 5 D. Step 6
A crane lifts a 425 kg steel beam vertically a distance of 117 m. How much work does the crane do on the beam if the beam accelerates upward at 1.8 m/s2? Neglect frictional forces
A) 5.8 × 105 J B) 3.4 × 105 J C) 4.0 × 105 J D) 4.9 × 105 J
A +5.0-?C point charge is placed at the 0 cm mark of a meter stick and a -4.0-?C charge is placed at the 50 cm mark. What is the net electric field at the 30 cm mark? (k = 1/4??0 = 8.99 × 109 N ? m2/C2 )
A) 4.0 × 105 N/C B) 5.0 × 105 N/C C) 9.0 × 105 N/C D) 1.4 × 106 N/C
What is the average translational kinetic energy of an ideal gas at 819K The Boltzmann constant is 1.38 × 10-23 J/K
A) 1.70 x 10-20 J B) 5.65 x 10-21 J C) 1.13 x 10-17 J D) 3.77 x 10-19 J