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When at rest, two trains have sirens that emit a frequency of 300Hz. The trains travel toward one another and toward an observerstationed between them. One of the trains movesat 26.0 m/s, and the observerhears a beat frequency of2.6 beatsper second. What is the speed of the second train, which travelsfaster than 26.0 m/s?
A mass of 0.14kg on the end of a spring oscillates with a period of 0.45 s and an amplitude of 0.15 m. Find the equation describing the motion of the mass
The tungsten filament of a light bulb has an operating temperature of about 2 100 K. what is the power output of the light bulb
Heat is added to 1.00 10^3 cm^3 of water at atmospheric pressure. The water's temperature increases by 30.9°C. Find the increase in the water's internal energy
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure in pascals
A laser emits 1.00 x10^20 photons/sec. The laser has a wavelength of 473 nm. What is the power output of the laser
A spherical shell 28 in diameter carries a total charge of 81 distributed uniformly over its surface. A 4 point charge is located at the center of the shell. What is the electric field strength 8 from the center.
A horizontal pipe contains water at a pressure of 150 {rm kPa} flowing with a speed of 1.30 {rm m/s}. The pipe narrows to one-half its original diameter. What is the speed of the water.
a daredevil is shot out of a cannon at an angle of 53 degrees with respect to the horizontal. the daredevil has an
A hall sensor made from silicon is 0.40 nm thick and has a charge carrier density of 2.0 x 10 ^19 m^-3. What is the value of the magnetic field
A constant volume gas thermometer is used to measure the melting point of lead. The ratio of the measured pressure at this temperature to that at the triple point of water is 2.1982. What is the melting temperature of lead in Kelvin.
Sunlight shines directly on to the wall of a large soap bubble (n = 1.33) which is floating in air (n=1). What is the minimum thickness it could have to produce completely destructive interference for blue light (%u03BB = 475 nm)
The two cylinders both have a radius of 1mm. Material 1 has a conductivity of 1.2 x10^4 S/m and material 2 has a conductivity of 1.4 x 10^4 S/m. Piece 1 is 6cm long and piece 2 is 8cm long.
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