The ability to instantaneously distribute and share content widely is the web's ______ advantage.
A. currency
B. connectivity
C. interactivity
D. delivery
Answer: B
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An optic fiber is made of clear plastic with index of refraction of 1.50, surrounded by air. For what angles of incidence ? will light remain within the plastic fiber?
A) ? ? 21.1° B) ? < 38.3° C) ? > 38.3° D) ? < 41.8° E) ? > 41.8°
Main-sequence stars have about the same density as the Sun but giant stars have very low densities
a. True b. False Indicate whether the statement is true or false
A ball is thrown straight up with a speed of 30 m/s, and air resistance is negligible. (a) How long does it take the ball to reach the maximum height? (b) What is the maximum height reached by the ball? (c) What is its speed after 4.2 s?
What will be an ideal response?
This photo shows a carnival ride called a Rotor. If you had a second Rotor that spins at the same rate as the one pictured, but has a smaller diameter, the centripetal force on the people by the wall would be: (Hint: This is similar to the space station discussed at the bottom of page 168.)
a. larger than the centripetal force in the Rotor pictured. b. the same as the centripetal force in the Rotor pictured. c. smaller than the centripetal force in the Rotor pictured.