Q- For the circuit shown, find a- the voltages on all essential nodes.
b- power associated with (50V), (4A), (10i) sources.
c- total power delivered to all resistors.

kindly provide me with a step by step answer because I am a beginner.
thanks in advance.

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.

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?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader