Physics, 07.10.2019 23:20, natalie3734
Firemen are shooting a stream of water at a burning buildingusing a high-pressure hose that shoots out the water with a speedof 25.0 m/s. as it leaves the end of the hose. once it leaves thehose, the water moves in projectile motion. the firemen adjust theangle of elevation α of the hose until the water takes3.00 s to reach the building 45.0 m away. you can ignore airresistance; assume that the end of the hose is at grounglevel.
a) find the angle of elevation α
b) find the speed and acceleration of the water at the highestpoint in its trajectory
c) how high above the ground does the water strike thebuilding, and how fast is it moving just before it hits thebuilding?
Answers: 1
Physics, 21.06.2019 22:00, datgamer13
Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph
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Physics, 22.06.2019 03:00, conceitedkayy1865
According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?
Answers: 1
Physics, 22.06.2019 04:30, leilaford2003
Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j
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Physics, 22.06.2019 08:50, babas97
The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions
Answers: 3
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