Acrane boom is 10 m long and has a mass of 2000 kg. the crane is holding a load of 8000 kg. the crane boom makes an angle of 500 with the horizontal. find the tension in the hoisting cable that makes an angle of 100 with the crane boom.

Mike walks 100 meter north, then walks 30 meters south. after this, he walks another 10 meters north. what is the magnitude of his total displacement during this walk,in meters?

Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?