A 1500-kg car traveling at 90 km/h toward the east suddenly collides with a 3000-kg car traveling at 60 km/h toward the south. The two cars stick together after the collision. What is the speed of the cars after collision?
A) 8.3 m/s
B) 14 m/s
C) 17 m/s
D) 22 m/s
B
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In the symbol for the Hubble type of a galaxy, SBc, the "B" denotes
A. the presence of a bar B. a large bulge component C. loosely wound spiral arms D. the presence of a ring E. tightly wound spiral arms
Suppose the Sun had been born with more mass, making it larger and hotter. Which of the following consequences would we expect according to the nebular theory?
A) There would be no comets. B) Asteroids would have formed closer to the Sun. C) Jovian planets would have formed farther from the Sun. D) There would have been no solar nebula in which material could condense to form planets.
You stand three feet away from a plane mirror. How far is it from you to your image?
a. 4.0 ft c. 2.0 ft b. 6.0 ft d. 3.0 ft
The flow of heat in a cold soft drink will be from ______
a. the drink to the ice cubes b. the drink to the outside air c. the drink to the glass d. the ice cubes to the drink