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A tungsten wire has a radius of 0.066 millimeter and is heated from 20 to 1405°C. The temperature coefficient of resistivity is = 4.5 x 10-3 degree. When 240 Volt is applied across the ends of the hot wire, a current of 1.3 Amp is produced. Determine how long is the wire? Ignore any effects due to thermal expansion of the wire.
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles (helium nuclei, each consisting of 2 protons and 2 neutrons). What is the force between the two alpha particles when th..
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. Compute the average power generated by the lifting force
A divers lungs hold 0.0050 m^3 of air at sea level, where the pressure is 101.3 kPa. what is the volume of the air in his lungs at a depth of 3 m
A water pipe having a 2.60 cm inside diameter carries water into the basement of a house at a speed of 0.827 m/s, find water pressure (in kPa) at the second floor
A beam of neutrons that all have the same energy scatters from the atoms that have a spacing of 9.30×10^?2nm in the surface plane of a crystal
A wildlife biologist tracks an elk over flat terrain by following the emissions from a radio collar worn by the animal. If the elk travels 3.0km at an angle of 30 degrees East of North, followed by 2.0km at 40degrees West of North, and finally a 4..
An electron moves through a uniform electric field E = (2.50 i + 5.00 j) V/m and a uniform magnetic field B = (0.400 k) T. Determine the acceleration of the electron
Suppose 4.00 g of hydrogen is separatedinto electrons and protons. Suppose also the protons are placed atthe earth's North Pole and the electrons are placed at the SouthPole. What is the resulting compressional force on the Earth?
Explain any advantages in using Conservation of Energy method to determine initial projectile velocity
a steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. the
The skis have a thrust of 220 . Sam's speed at the bottom is 45.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
A charged capacitor is connected to an inductor to form an LC circuit with a frequency of oscillation f = 1.6 Hz. What is the maximum charge of the capacitor
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