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A resistor is constructed of a carbon rod that has a uniform cross sectional area of 5.00 mm2. When a potential difference of 15.0 Volt is applied across the ends of the rod, the rod carries a current of 4.00 × 10-3 Amp.
a. Determine the resistance of the rod?
b. Determine the rod length?
An electron moving parallel to the x axis has an initial speed of 3.70x10^6 m/s at the origin. Calculate the potential difference between the origin and that point.
A particle with a charge of 31?C moves with a speed of 72m/s in the positive x direction. The magnetic field in this region of space has a component of 0.38T in the positive y direction, what is the magnitude of the magnetic force on the particle
A 5.6-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 3.8 m/s2, find the force exerted by the rope on the bucket
Two identical springs (neglect their masses) are used to “play catch” with a small block of mass 110g (see the figure ). Spring A is attached to the floor and compressed 10.0cm with the mass on the end of it (loosely).
A defibrillator is used during a heart attack to restore the heart to its normal beating pattern, How many electrons pass through the wires connected to the patient
A 0.54-kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
A nonconducting solid sphere of radius 11.2 cm has a uniform volume charge density. What is the sphere's volume charge density
Find the coefficient of friction between crate and floor
A capacitor consists of two closely spaced metal conductors of large area, separated by a thin insulating foil. Calculate the amount of energy stored in the capacitor
A 720 gram grinding wheel 30.0cm in diameter is in the shape of a uniform solid disk. What torque does friction exert while this wheel is slowing down
An electric motor can accelerate a Ferris wheel of moment ofinertia I = 22000kg·m2 from rest to 10.0rev/min in 12.0 s. Determine the torque generated by the motor to bring the wheel to 10.0 rev/min
a bird is flying directly toward a stationary bird-watcher and emits a frequency of 1250 hz. the bird-watcher however
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