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A car horn produces a sound with a frequency of 400 Hz. The horn is sounded while the car is moving down the street in the same direction as a bicycle which is ahead of the car. The bicyclist is moving down the street with 1/4.29 the speed of the car and hears a frequency of 432 Hertz. Determine the speed of the car (in m/s). The speed of the sound is 341 m/s.
Light shines during a single slit whose width is 4.60*10-4 m. A diffraction pattern is formed on a flat screen located 3.8 m away. The distance among the middle of the central bright fringe and the first dark fringe is 6.50 mm. What is the wavelength..
The upper end of a 3.20m--long steel wire is fastened to the ceiling, and a 58.0kg- object is suspended from the lower end of the wire, What is the mass of the wire
A boy in a wheelchair (total mass 51.0 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long. Find the work he did in pushing forward on his wheels during the downhill ride
An electron (mass of 9.110×10-31kg and charge of -1.602×10-19C is released at rest above the surface of the earth (where g = 9.81 m/s2). A second electron directly below it exerts an electrostatic force on the first electron that exactly cancels the ..
water flows through a horizomtal tube of length 25cm and internal diameter 1 mm under a constant head of the liquid
A diverging lens (f = -11 cm) is located 20.0 cm to the left of a converging lens (f =34.0 cm). A 3.00-cm-tall object stands to the left of the diverging lens, accurately at its focal point. Decide the distance of the final image relative to the conv..
A meniscus lens is concave on one side and convex on the other. Find the refractive power of a meniscus lens with n = 1.56 and curvature radius 29cm on the convex side and 48cm on the concave side
One end of an insulated metal rod is maintained at 100 degrees C , while the other end is maintained at 0 C by an ice-water mixture. Find the thermal conductivity k of the metal
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 4.60rad/s and? = 0.795rad/s3, Calculate the angular acceleration as a function of time
(a) A hydrogen atom has its electron in the n=3 level. The radius of the electron's orbit in the Bohr model is 0.476 nm. Find the de Broglie wavelength of the electron under these circumstances.
A 22.0-kg mirror with a surface area of 1.0 m2 and a reflectivity is bombarded by light of average intensity at an angle of to the normal of its surface. If the light has a duration of how much does the velocity of the mirror change during that..
consider a series lcr circuit consisting of a 20-micro farad capacitance a 10-milli-henry inductance and a 23-ohm
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