Physics, 05.10.2019 17:00, samantha9014
Sound waves are traveling through the air. every ½ second, the sound waves pass a detector. which of the following choices correctly describes the period and frequency of these waves?
the frequency is ½ second, and the period is 2 hz.
the period is ½ second and the frequency is ½ hz.
the period is ½ second, and the frequency is 2 hz.
the period is 2 s, and the frequency is 2 hz.
Answers: 3
Physics, 22.06.2019 00:00, tsupreme
1134567 a jet with mass m = 1.1 ă— 105 kg jet accelerates down the runway for takeoff at 2 m/s2. 1) what is the net horizontal force on the airplane as it accelerates for takeoff? 2.2*10^5 n your submissions: 2.2*10^5 computed value: 220000submitted: saturday, january 26 at 2: 41 pm feedback: correct! 2) what is the net vertical force on the airplane as it accelerates for takeoff? 0 n your submissions: 0 computed value: 0submitted: saturday, january 26 at 2: 41 pm feedback: correct! 3) once off the ground, the plane climbs upward for 20 seconds. during this time, the vertical speed increases from zero to 21 m/s, while the horizontal speed increases from 80 m/s to 95 m/s. what is the net horizontal force on the airplane as it climbs upward? n 4) what is the net vertical force on the airplane as it climbs upward? n 5) after reaching cruising altitude, the plane levels off, keeping the horizontal speed constant, but smoothly reducing the vertical speed to zero, in 13 seconds. what is the net horizontal force on the airplane as it levels off? n 6) what is the net vertical force on the airplane as it levels off?
Answers: 1
Physics, 22.06.2019 17:20, lilzaya510
Properties seen when one one substance changes to another are known as properties
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Physics, 23.06.2019 01:30, skylarbrown018
The amount of potential energy possessed by an elevated object is equal to
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Sound waves are traveling through the air. every ½ second, the sound waves pass a detector. which of...
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