Bullet flight time and speed
A rifle is aimed horizontally at a target 45 m away. The bullet hits the target 2.5 cm below the aim point. What is the bullet's flight time and the speed as it left the barrel?
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A simple pendulum makes 121 complete oscillations in 3.0 min at a location where g = 9.80 m/s2. (a) Find the period of the pendulum.
Water discharges from a horizontal cylindrical pipe at the rate of 484 {rm cm^{3}/s}. At a point in the pipe where the radius is 2.02 {rm cm}, the absolute pressure is 1.70×105 {rm Pa}. What is the pipe's radius at a constriction if the pres
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Despite the 1954 U.S. Supreme court decision that racially segregated school systems are inherently unequal, most schools remain segregated with virtually none or virtually all African American or Hispanic pupils.
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Why is time an important consideration in international business negotiations?
A hunter wishes to cross a river that is 1.1 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 11 km/h with respect to the water. What is the minimum time necessary
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