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...speed at a rate of 1 meter per second. What is the size and direction of the net force on the car? a=1 m/s^2 所以合力(size of the net force) = 1200...
...by the Flemming's left hand rule, the current should flow in the negative z direction . And the magnetic force due to this current value is BIl in positive...
...the answer is (c) Because it is a negative electric charge, the direction is opposite to positive one, in other words, the direction of it is...
...toward with the train together. so the air doesn t make any affection on the ball in horizontal direction .
...20+1) k ∆M = ∆v*m, m = 1 => ∆M = ∆v = 7i 12j -19k3)in x direction :v3 = 30*m / 2m = 15 (m/s)in y direction :v3 = 30*m / 2m = 15 (m/s)=> combine: v3...
... car(frequency 500Hz) vw:The velocity of wind (b)The direction of v is opposite of wind.(To observer), so v=vw-v(wind) (c)The...
...s surface directly. The scattered part of the irradiance has no direction . Only direct irradiance can be used for concentrating solar...
...*N1=-πD2*N2 => N2/N1=Same Direction =(-D1/D2)*(-D3/D4)=(-T1/T2)(-T3...
directions 相關
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