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A modern house is wired for 120.0 V, and the current is limited by circuit breakers to a maximum of 290.0 A. (For the purpose of this problem, treat these as DC quantities.) a) Calculate the minimum total resistance the circuitry in the house can have at any time. b) Calculate the maximum electrical power the house can consume.
q1. the two rotating systems shown in the figure differ only in that two identical movable masses are positioned at
A 45.8-kg girl is standing on a 161-kg plank. Both originally at rest on a frozen lake that constitutes a frictionless, flat surface. What is the velocity of the plank relative to the ice surface
An electron is at the origin, and an ion with charge +5 e is at x=16 nm. Find a point where the electric field is zero
Consider a system consisting of three masses on the axis. Mass m1 = 1.50kg is at x = 1.40m ; mass m2 at 2.30kg is at = 2.10 m; and mass m3= 3.30kg is at = 2.60 m
A solid cube of iron (density = 7.87 g/cm3) has a mass of 88.0 g. What is the resistance between opposite faces of the cube
You are standing 2.2m from a 110-W lightbulb. If the pupil of your eye is a circle 5.0mm in diameter, how much energy enters your eye per second
A defective starter motor in a car draws 260 A from the car's 12-V battery, dropping the battery terminal voltage to 6.0 V. What will the battery terminal voltage be with a good starter
A fireworks rocket is launched vertically upward at 40 m/s. At the peak of its trajectory, When does the second fragment reach the ground
Two tugs A and B pull a ship along a direction XO. Tug A exerts a force of 30kN at an angle of 15 degrees to XO, Find the angle X for the resultant force on the boat to be along XO
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 1000N/C and 60mT , respectively. Find the speed of the particle if it is a proton.
A capacitor can be made from two sheets of aluminum foil separated by a sheet of waxed paper. what is the capacitance of this capacitor
Four charges of equal magnitude Q = 65 nC are placed on the corners of a rectangle of sides D1 = 25 cm and D2 = 10 cm. calculate the numeric value for the horizontal force in N
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