A lamp with a mass m is suspended from the ceiling by two cords as shown. The ratio of the magnitude of the horizontal component of the tension in to that in is .

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can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s

the higher the current the higher the mag field around it the higher the influence on the compass

answera compound;