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Physics, 05.07.2019 21:30, rosehayden21
1. a ball is thrown horizontally off a building that is 30m high with an initial velocity of 3 m/s . if an identical ball is thrown again horizontally from the same height at a velocity of 6 m/s, what happens to the flight time? a. flight time is doubled b. flight time is cut in half c. flight time is the same d. flight time is exponentially increased 2. where is the vertical velocity of a projectile the smallest? a. right before it hits the ground b. it is constant the entire flight c. at the top of the trajectory
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Physics, 22.06.2019 14:40, akitchen10
A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.
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