a force of 30 N is applied on an object at 30 degrees above the positive x-axis. determine its horizontal and vertical components

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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