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In Europe, the standard voltage is 240 V (rms), AC, and 50 cycles/s. Suppose you take your 5.00 W electric razor to Rome and plug it into the receptacle (with an adapter to fit the receptacle but not to change the voltage).
(a) What power will it draw in Rome?
(b) What rms current will run through the razor in the United States and in Rome? Is the razor in danger of being damaged by using it in Rome without a voltage adapter?
(c) If you want to use the razor in Rome without damaging it, what type of transformer would you need? Be as quantitative as you can.
(d) What is the resistance of your razor?
A string is wrapped around a disk of mass m = 1.7 kg and radius R = 0.08 m. Starting from rest, you pull the string with a constant force F = 7 N along a nearly frictionless surface. At the instant while the center of the disk has moved a distance..
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.175 s, elucidate what is the average force exerted on the ball by the wall?
The filament of an incandescent light bulb is made of tungsten which has a thermal coefficient of resistivity of ? = 4.4 x 10-3K-1, Write an equation for the initial current, I0, that flows through the filament when it is initially turned on
A diving board oscillates with simple harmonic motion of frequency 2.10 cycles per second what is the highest amplitude with which the end of the board can vibrate in order that a pebble placed there would not lose contact with the board all throu..
A circular coil 19.0cm in diameter and containing nine loops lies flat on the ground. Determine the torque on the coil. Express your answer using three significant figures and include the appropriate units
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A thin uniform rod (length = 2.01 m, mass = 3.11 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
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A wooden cylinder of length 2.0m and cross section 78cm^2 is suspended in vertical positionwith a string of length 2.5m. Find the linear density of the string
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A hospital nurse walks 25 m to a patient's room at the end of the hall in 0.50 min. She talks with the patient for 4.0 min, What was the nurse's average speed
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