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Nichrome wire of cross-sectional radius 0.788 mm is to be used in winding a heating coil. If the coil must carry a current of 9.75 A when a voltage of 3.00 102 V is applied across its ends, find the following.
(a) the required resistance of the coil
(b) the length of wire you must use to wind the coil
m
An air puck of mass m1 = 0.15 kg is tied to a string and allowed to revolve in a circle of radius R = 1.1 m on a frictionless horizontal table. What is the horizontal force acting on the puck
A box slides down a ramp between a delivery area and soring area. You must determine the angle this ramp should have with the horizontal direction so that a 500 pound box takes 5.0 seconds to slide down the ramp starting from rest at the top. While t..
A fisherman is fishing from a bridge and is using a "30.0-N test line." In other words, the line will sustain a maximum force of 30.0 N without breaking. What is the weight of the heaviest fish that can be pulled up vertically.
A clean zirconium surface is illuminated by ultraviolet light. What is the work function (in electron-volts) of the metal
A Goodyear blimp typically contains 6280 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) of the helium in the blimp
The period of the moon (the time for a complete revolution) is 27.32 days, Determine the angular velocity of the moon
A dolphin in seawater at a temperature of 25 °C emits a sound wave directed toward the ocean floor 246 m below. How much time passes before it hears an echo? (The speed of sound in ocean water is 1533 m/s.)
A generator has a square coil consisting of 288 turns. The coil rotates at 117 rad/s in a 0.218-T magnetic field. What is the length of one side of the coil
Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing for a healthy young person, What is the largest possible value for the frequency of the other ultrasonic wave
A 120 V (rms) AC power supply that delivers 0.5 A (rms) current is connected to "side 1" of a transformer. what is the peak voltage drop across the first resistor
A screen is placed 52.4 cm to the right of the converging lens. A diverging lens is placed between the converging lens and the screen. What is the focal length f2 of the diverging lens
Compute the average intensity
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