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For a 120-V rms 60-Hz voltage, an rms current of 70 mA passing through the human body for 1.0?s could be lethal.
What must be the impedance of the body for this to occur?
A bat flies toward a wall, emitting a constant sound of frequency 2.00 rm kHz. This bat hears its own sound plus the sound reflected by the wall.
An object with a charge of 0.980 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
A uniform upward directed electric field of magnitude 1.4*10^-6 N/C has been setup between tow horizontal plates by charging the lower plate positively abnd the lower plate negatively, what is the vertical deflectio of the mass when it exits the pl..
What is the Acceleration of an object moving on a circular track
Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.7 kg and m2 is 9.0 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor.
How to find out potential energy
When the water turns to ice during the night, heat is free into the plants, thereby giving them a measure of protection against the falling temperature. Assume a grower sprays 7.64 kg of water at 0°C onto a fruit tree.
A 260-kg piano slides 4.2m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
A gymnast with mass m1 = 42 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 106 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
A long distance power line is to carry 175 megawatts (1.25x10^8W) of alternating current power at distance of 15.0km at a peak voltage of 1.00MV and a frequency of 60Hz.
A conducting rod of length 0.5 m slides along a frictionless table at a constant velocity 1.5 m/s. A uniform magnetic field of 0.75 T is normal to the surface.
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