Alightbulb is rated by the power that it dissipates when connected to a given voltage. for a lightbulb connected to 120 v household electricity, decreasing the resistance of the filament will the current through the bulb and the power dissipated by the bulb.

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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.

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Does heating a metal wire increase or decrease its electrical resistance? why?