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A charge per unit length given by λ(x) = bx, where b = 12nC/m2, is distributed along the x axis from x = +9.0 cmto x = +16 cm. If the electric potential at infinity is taken to be zero, what is the electric potential at the point P on the yaxis at y = 12 cm?
Two 1.0-MHz radio antennas emitting in-phase are separated by600 m along a north-south line. How far north should that receiver be moved if it is again todetect a signal nearly as strong
Two parallel conductors carrying current in the same direction attract each other. If they are permitted to move toward each other, the forces of attraction do work. Where does the energy come from? Does this contradict the assertion in that magne..
A string is wrapped around a disk of mass m = 1.9 kg and radius R = 0.12 m. Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At this instant, how much rotational kinetic energy does the disk..
A 1.0cm x 1.0cm x 1.0cm box is between the plates of a parallel-plate capacitor with two faces of the box perpendicular to E. What is the net electric flux through the box
Beginning with expressions for the reactance of a capacitor and an inductor, derive an expression for the resonant frequency
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. The tracheae begin at the surface of the insect's body and p..
An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum..
A 12 kg box slides 4.0 {rm m} down the frictionless ramp, and then collides with a spring whose spring constant is 240 N/m.
A block oscillating on a spring has period T = 2.0s What is the period if the block's mass is doubled? Explain. What is the period if the value of the spring constant isquadrupled?
if i drop a rock off a cliff and it takes 4s before i see it hit the grounda how high is the cliff?b how fast is the
A 78.3?kg bungee jumper is enjoying an afternoon of jumps. The jumper's first oscillation has an amplitude of 10.3m and a period of 4.75s. find the spring constant of the bungee cord
A child knocks a 1.2 kg vase off of a table 1.5 m above the ground. What impulse did the floor exert on the vase
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