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Find the frequency of vibration of a ball of mass m = 3kg on a spring of modulus (i) k1 = 27 nt/m, (ii) k2 = 75 nt/m, (iii) on these springs in parallel (iv) in series, that is the ball hangs on 1 spring which, in turn, hangs on the other spring.
A train engineer blows a whistle that has a frequecy of 4.0 X 10^2 hz as the train approaches a station. if the speed of the train id 25 m/s, what frequency will be heard by a person at station.
A point charge of magnitude 9.15uC is at the center of a cube with sides of length 0.470m. find the electric flux through each of the six faces of the cube
Water flowing through a 1.7cm -diameter pipe can fill a 100L bathtub in 5.3min. compute the speed of the water in the pipe
A car drives straight off the edge of the cliff that is 56 m high. The police at the scene of the accident note that the point of impact is 128m from the base of the cliff. How fast was car travelling when it went over the cliff.
An object is recovered from under the sea. Its weight is measured to be 32.5 lb and its volume 3.3 ft3. What is the object's weight density
The asteroid belt circles the sun among the orbits of Mars and Jupiter. One asteroid has a period of 5.0 earth years. What is the asteroid's orbital speed? What is the asteroid's orbital radius? The moon's force is what percent of the sun's force? Wh..
A compound microscope has two thin lenses with focal lengths of +1.4 and +3.2 centimeter, obtain the distance separating the two lenses
water at a pressure of 5 atm at street level flows into an office building at a speed of 0.7 ms through a pipe 5 cm in
When two point charges are a distance R apart, their potential energy is -2.00 .How far (in terms of R) should they be from each other so that their potential energy is -6.00.
A mass of 0.3 kg is connected to a mass less spring with a force constant k=20 N/m. The system oscillates horizontally on a frictionless surface with amplitude of 4 cm. What is the velocity of the mass when it is 2 cm away from its equilibrium positi..
A 2.6-kg sphere of radius 35 cm is initially rolling on a flat surface with a speed of v = 0.40 m/s. Determine the force F and the distance l
Two identical guitar strings are prepared such that they have the same length (2.43 m) and are under the same amount of tension. find the wave propagation speed on the guitar strings
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