Question1a 20 rm kg uniform door has a width of 12 rm m and

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Question1

A 20 rm kg uniform door has a width of 1.2 rm m and a height of 2.5 rm m. The door is mounted on a post by a pair of hinges, marked 1 and 2, at the top and bottom of the door. An outside force of 60 rm N, at an angle of 30° above horizontal, is applied to the doorknob, as shown. The doorknob is 1.0 rm m above the bottom of the door. The x-component of the force, exerted on the door at the bottom by hinge 2, is closest to how do you resolve that? How can you describe the method?

Question2

The planet orbiting star HD187123 has a semi main axis of 0.042 A.U. If the star’s mass is 1.06 times the mass of the Sun, estimate how many times planet has orbited its star while the paper announcing it was published on December 1, 1998

Reference no: EM13349970

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