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Lightning bolts can carry currents up to approximately 20 kA. We can model such a current as the equivalent of a very long, straight wire.
(a) If you were unfortunate enough to be 5.1 m away from such a lightning bolt, how large a magnetic field would you experience?
(b) How does this field compare to one you would experience by being 5.1 cm from a long, straight household current of 5 A?
Smaller mammals use proportionately more energy than larger mammals; that is, it takes more energy per gram to power a mouse than a human. A typical mouse has a mass of 20 g and, at rest, needs to consume 3.0 Cal each day for basic body processes.
Explain the valve minor loss coefficient and how you would go about determining K.
A laser produces a 5.10mW beam of light, consisting of photons with a wavelength of 637.8nm. How many photons are emitted by the laser each second
Dan lifts a mass of 10 kg vertically upward at a constant speed of 0.2 m/s through a distance of 1 m. What is the work done by Dan
q1. a 362 g object is attached to a spring and executes simple harmonic motion with the period of 0.200 s. if the total
A 346-, uniform, 1.04- bar is suspended horizontally by two vertical cables at each end. Cable A can support a maximum tension of 506.0 without breaking, and cable B can support up to 436.0. You want to place a small weight on this bar. What is the h..
A certain thin, uniform rod has a mass of 2 kg and length 3 m. To what shorter length must you trim it (discarding the smaller part) so that the remaining length has half the original moment of inertia about its end.
An electron is fired directly toward the center of a large metal plate that has excess negative charge with surface charge density 2.00×10-6 C/ m2. how far from the plate must it be fired
A hydrogen atom is in the n = 22 state. Use the Bohr model of the hydrogen atom, find the potential energy of the atom
A large wooden turntable in the shape of a flat disk has a radius of 2.25m and a total mass of 135kg, Find the angular speed of the turntable after the parachutist lands
You have a 1.91-m-long stretched string with a mass of 19.3 g. When you oscillate the string at 440 Hz, obtain the tension in the string
A solid disk of radius 6.50cm and mass 1.35kg , which is rolling at a speed of 2.70m/s , begins rolling without slipping up a 12.0? slope
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