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Lightning strikes a solid iron flag pole which has a resistance of 2.0 x 10-4 ohms. The potential difference between the top and bottom of the pole is 4.2 x 104 V. The electrons are flowing up the pole. What will be the magnitude and direction of the magnetic field 0.72m north of the pole?
Light of wavelength 630 nm passes through a grating and then onto a screen located several meters from the grating. Determine the wavelength of the second source
Find the tangential acceleration of a bug on the rim of a 11.0 in. diameter disk if the disk moves from rest to an angular speed of 78 revolutions per minute in 3.0 second
A 120 Volt rms voltage at 60 Hertz is applied across an inductor, capacitor and a 100 ohm resistor in series. compute the rms value of the current in this circuit
A solid, horizontal disk of mass 10.9kg and radius 1.20m rotates with an angular speed of 7.87rad/s about a fixed vertical axis through its center. A 0.232kg piece of putty is dropped vertically onto the disk at a point 0.834m from the center of r..
a series RLC circuit has elements with the following values:R= 10Ω, L=0.5 H, and C= 2μF. What is the resonant frequency of this circuit
A ball of mass m is suspended above the center of the rotating platform on the elastic spring with stiffness k and initial (non-stretched) length l0 as shown. The opposite end of the spring is attached to the vertical pole fixed on axis of the platfo..
The coefficient of kinetic friction for a 22 kilogram bobsled on a track is 0.10. Determine what force is required to push it down a 6.0 degree incline and achieve a speed of 60 km/h at the end of 75 meter
Write down KVL for both the base loop and the collector loop when the transistor is in saturation.
A skater is initially spinning at a rate of 13.1 rad/s with a rotational inertia of 2.54 kg·m2 when her arms are extended. What is her angular velocity after she pulls her arms in and reduces her rotational inertia to 1.64 kg·m2?
Two concentric shells of uniform density having masses M1 and M2are situated. Discover the force on a particle of mass m when the particle is located at (a) r = a, note speed of propagation of gravitation in Newtonian physics. (b) r = b, and (c) r = ..
20.0 kg floodlight in a park is supported at the end of ahorizontal beam of negligible mass that is hinged to a pole. find the horizontal and vertical forces exerted on the beam by the pole
Without corrective lenses a near sighted person can see clearly only objects that are within 100 cm from his eyes. What type of lens is the contact lens
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