Physics, 20.09.2021 06:20 allhailkingmilkdud
Tại 3 đỉnh của 1 tam giác đều cạnh a có đặt 3 chất điểm , khối lượng lần lượt m1 , m2 , m3 . xác định khối tâm của hệ ba chất điểm đó áp dụng trường hợp m2=m3=m , m1=2m
Answers: 1
Physics, 21.06.2019 20:20
Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?
Answers: 1
Physics, 21.06.2019 22:00
•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?
Answers: 3
Physics, 21.06.2019 23:40
Aregular polygon has angkes of size 150° each.how many side has the polygon
Answers: 1
Physics, 22.06.2019 01:10
The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping
Answers: 1
Tại 3 đỉnh của 1 tam giác đều cạnh a có đặt 3 chất điểm , khối lượng lần lượt m1 , m2 , m3 . xác địn...
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