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Three silver wires of equal length are connected in series with a1.50 V battery. Their cross-sectional areas are 1.00, 5.00 and10.0 cm2. (a) What is the potential difference across the narrowestwire? (b) The medium wire? (c) The widest wire?
you have one heavy cart at 1.5kg and the lighter one at 1.0kg. neglect friction. the heavy cart starts at rest. what are the magnitude and direction of the systems momentum
A 545-turn circular-loop coil with a diameter of 18.8 cm is initially aligned so that its plane is perpendicular to the Earth's magnetic field, What is the value of the Earth's magnetic field
A metal sphere of radius 13 cm has a net charge of 2.8 x10–8 C. (a) What is the electricfield at the sphere's surface? (b) If V =0 at infinity, what is the electric potential (in V) at thesphere's surface?
Two stationary positive point charges, charge 1 of magnitude 3.45 nC and charge 2 of magnitude 1.50 nC, are separated by a distance of 52 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
A moving sidewalk 95 m in length carries passengers at a speed of .53 m/s. One passenger has a normal walking speed of 1.24 m/s, If she walks at her normal walking speed on the sidewalk, how long does it take to travel the fill length
A square ammeter has sides of length l = 2.01 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. What is the current in the wire
A pulley, with a rotational inertia of 1.1 x 10-3 kg·m2 about its axle and a radius of 5.8 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F = 0.16t + 0.43t2, with F in newtons and t in seconds.
A 10.0microF capacitor and a 5.45mH inductor are connected in series with an open switch. What is the angular frequency of the charge oscillations
A 26 block of aluminum sits on the bottom of a tank of water. How much force does the block exert on the bottom of the tank
A neighborhood transformer on the top of a utility pole transforms 15.0kV 60.0 Hz alternating voltage down to 120.0V to be used inside a house. how many turns does the primary coil have
your are sitting in your car which is standing at the side of the road with the engine idling. in the rearview mirror
A conveyor belt at a quarry lifts 2,000 kg of sand per minute up a vertical distance of 12 meters. The sand is at first at rest, then moves at a speed of 0.20 m/s along conveyor belt. What is the instantaneous power generated by this machine .
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