A car moving initially at 30 m/s comes gradually to a stop in 900 m. What was the acceleration of the car?
A. -20 m/s2
B. -0.5 m/s2
C. -10 m/s2
D. -5 m/s2
Answer: B
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A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely
a. a small-diameter reflecting telescope. b. a small-diameter refracting telescope. c. a large-diameter refracting telescope. d. a large-diameter reflecting telescope. e. an infrared telescope.
A fluid grid layout may remove or replace certain screen elements once the page reaches a certain screen size.
Answer the following statement true (T) or false (F)
COHESIVE FORCES are
A) repulsive forces between unlike molecules. B) repulsive forces between like molecules. C) attractive forces between unlike molecules. D) attractive forces between like molecules.
A tiger is running in a straight line. If we double both the mass and speed of the tiger, the magnitude of its momentum will increase by what factor?
A) 8 B) 4 C) D) 16 E) 2