An unusual lightning strike has a vertical portion with a current of ?400 A downwards. The Earth's magnetic field at that location is parallel to the ground and has a magnitude of 30 ?T. In N, the force exerted by the Earth's magnetic field on the 25 m-long current is
a. 0.
b. 0.012 N, East.
c. 0.012 N, West.
d. 0.30 N, West.
e. 300 N, East.
d
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Cartridge brass can be extensively deformed into thin-walled sections because it does not _________-harden.
Fill in the blank(s) with the appropriate word(s).
When aqueous solutions of Na2CO3 and BaCl2 are mixed, the products are NaCl and ______________
Fill in the blank(s) with correct word
A steam line is insulated with 15 cm of rock wool. The steam line is a 5 cm OD iron pipe with a 5 mm thick wall. Estimate the heat loss through the pipe per meter length if steam at 120ºC is in the line and the surrounding temperature is 20ºC. Also determine the temperature distribution through the pipe and insulation.
What will be an ideal response?
A 8.0-m long wire with a mass of 10 g is under tension. A transverse wave for which the frequency is 570 Hz, the wavelength is 0.10 m, and the amplitude is 3.7 mm is propagating on the wire
The maximum transverse acceleration of a point on a wire is closest to A) 47,000 m/s2. B) 41,000 m/s2. C) 35,000 m/s2. D) 29,000 m/s2. E) 53,000 m/s2.