Physics, 18.03.2020 17:29, brandyjune9546
A train covered the distance of 400 km between A and B at a certain speed. On the way back it covered 2 5 of the distance at that same speed and then it decreased its speed by 20 km/hour. Find the speed of the train at the end of its journey from B back to A, if the entire trip took 11 hours.
Answers: 1
Physics, 21.06.2019 16:00, bugsbunny27
Alarge truck is moving 22.0 m/s. if it’s momentum is 125,000 kg • m/s, what is the trucks mass
Answers: 1
Physics, 22.06.2019 16:50, JeroMii
Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s. part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.
Answers: 2
A train covered the distance of 400 km between A and B at a certain speed. On the way back it covere...
English, 23.11.2020 14:00