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A horizontal, 30-cm-long conducting rod is rolling along two conducting rails that are parallel to the x-axis. The rod is parallel to the y-axis, but moves in the +x direction with a speed of 3.3 m/s . The rails are electrically connected by a second conducting rod attached to the rails at an x-coordinate smaller than that of the rod.
The entire assembly is immersed in a uniform magnetic field of 0.4 T in the +z direction (up). An emf is developed by the moving conductor. The moving rod has a resistance of 2.1 ohms, while the resistance of the circuit-closing rod and rails in series with the rod is 89 ohms. The emf drives a current around the circuit. Neglecting friction, what force (in Newtons) is needed to keep the rod moving at a constant speed?
A 1970-kg car is moving down a road with a slope of 14% while speeding up at a rate of 3m/s^2. What is the direction and magnitude of the frictional force
Determine the equations of motion for transverse oscillations of a planar square lattice of identical atoms of mass M with a force constant C using nearest neighbor interaction.
water is flowing in a pipe with a varying cross-sectional area and at all points the water completely fills the pipe.
A hydrogen atom in the ground state absorbs a 20 eV photon. What is the speed of the liberated electron
95.8 kg of ice is melted into water then raised to a temperture of 325.8 K. How much energy is needed to complete this process?
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
a 20 microfarad capacitor is connected in series with a 160 ohm resistor. the capacitor is initially charged to a
Calculate the size of the smallest object on Mars that this telescope can resolve. Assume Mars is at its closest distance 7.8 × 1010 m from the Earth
At t = 0, an atom leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i-4.0j)m/s2. determine the speed of the atom
A disk of radius R has a hole in the center of radius a (like an audio compact disk). If the disk holds a uniform surface charge ?, determine the expression for the electric field at a point P that lies along the central perpendicular axis of the dis..
1. Select a business with which you are familiar and identify examples of customers using search, experience, and credence quality to evaluate the good or service. You might also look up the businesses on the Internet or visit the library.
A 1250 kg car is moving at 17.1 m/s. Then, 373 kJ of work is done on the car to increase its speed. What will be the car's new speed
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