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A metal rod is connected to a battery during two stiff metal wires that hold the rod horizontally. The rod is among the poles of a horseshoe magnet that is sitting on a mass-measuring platform scale, which reads 100g. After you turned on the current in the circuit, the scale supporting the magnet read 106 g. The rod is 7.0 cm long and the current through it is 1.4A.
Discover the magnitude of the magnetic field.
Two 1.50 V batteries -- with their positive terminals in the same direction -- are inserted in series into the barrel of aflashlight. One battery has an internal resistance of 0.240 Ω, the other an internal resistance of0.110 Ω. When the switch is..
an object is acted on by a drag force with a magnitude that is proportional to the speed. the object accelerates
An electromagnetic plane wave is traveling through a vacuum along the positive z-axis. At a particular point in space at one instant in time the electric field vector is E=i(6V/m) + j(6 V/m).
A fixed 0.18-{\rm kg} solid-disk pulley with a radius of0.075 m is acted on by a net torque of 6.4 m \cdot N. What is the angular acceleration of the pulley
An 11.00 kg crate is placed on a horizontal conveyor belt. The materials are such that static friction = 0.47 and kinetic friction = 0.24.
A geosynchronous orbit for a satellite has a period of one Earth day
In a double-slit interference experiment, the wavelength is ? = 622 nm, What is the linear distance between the 6th order maximum and the 2nd order maximum on the screen
Two pieces of steel wire with identical cross sections have lengths of L and 2L. what is the frequency of the third harmonic in the longer wire
The coil wand pendulum starts swinging with an angle of 30 degrees with the vertical. After it passes through the magnetic gap, the pendulum rises to a level which makes 10 degrees with the vertical. What is the energy lost by the pendulum
You are driving in one direction on a long straight road. You drive in the positive direction at 126 km/h for 30.0 minutes, How far did you drive
Object O1 is 15.0 cm to the left of a converging lens of 10.0-cm focal length. A second lens is positioned 10.0 cm to the right of the first lens, What is the focal length of the second lens
If two tiny identical spheres attract each other with a force of 4.00nN when they are 28.0cm apart, what is the mass of each sphere
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