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Q. The acoustical system is driven by speaker emitting a 432Hz note. If destructive interference occurs at a particular instant, by what least amount amount must the difference of two path lengths in the U-shaped tube be increased so as to hear constructive interference?
Q. A crate of mass 14.00 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline that makes an angle of 19.50° with the horizontal. The coefficient of kinetic friction is 0.40, and the crate is pulled 5.25 m.How much work is finished by gravity?
A block of mass M is held motionless on a frictionless inclined plane by means of a string attached to a vertical wall as shown in the diagram.what is the magnitude of the tension t in string.
Two identical metal spheres and are connected by a plastic rod. Both are at first neutral. 6.0×10^12 electrons are added to sphere , then the connecting rod is removed.
Find out direction and magnitude of force
Suppose that 0.10mol of argon gas is admitted to an evacuated 50cm3 container at 20° C. The gas then undergoes isobaric heating to the temperature of 300°C. What is the final pressure of gas? What is the final volume.
A 1125 kg car and a 2250-kg pickup truck approach a curve on the express way that has a radius of 225 m. (a) At what angle should the highway engineer bank this curve so that vehicles traveling at 95 km/h can safely round it? (b) As car and truck ..
A driver in a car travelling at the speed of 78 km/h sees a cat km away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 99 m.
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. It vibrates with a fundamental frequency of 27.5 Hz. What is the total mass of the wire.
Two ants race across a table 56 cm long. One travels at 4.5cm/s and the other at 2cm/s. When the first one crosses the finish line how far behind is the second one.
An object with a height of 42 cm is placed 2.2 m in front of a concave mirror with a focal length of 0.45 m. Determine the location and magnification of the image produced by the mirror, using the mirror and magnification equations.
When she tightens the string slightly, she hears 6 beats/s. What is the frequency of string now.
An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 20 m/s in 1.9 s. (a) In that 1.9 s interval, how much work is completed on the object by the force accelerating it.
find the volume of the irregularly shaped object. What is sigma_inner, the surface charge density (charge per unit area) on the inner surface of the conducting shell.
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