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The first three natural frequencies of an organ pipe are 126 Hz, 378 Hz, and 630 Hz.
(A) Is the pipe an open or a closed one?
(B) Taking the speed of sound in air to be 340 m/s, find the length of the pipe.
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
An object is released from an aeroplane which is diving at an angle of 30 from the horizontal with a speed of 50m/s. If the plane is at a height of 4000m from the ground when the object is released, find the velocity of the object when it hits the gr..
A pilot flies horizontally at 630 km/h, at height h = 48 m above initially level ground. However, at time t = 0, at what time t does the plane strike the ground
During an action potential, Na+ ions move into the cell at a rate of about 3×10^?7mol/m2?s. How much power must be produced by the "active Na+ pumping" system
The graph shows how the force component Fcosalong the displacement varies with the magnitude s of thedisplacement. Find the work done by the force. (Hint: Recallhow the area of a triangle is related to the triangle's base andheight.)
Suppose a slide similar to Der Stuka is 38.8 meters high, but is a straight slope, inclined at 45° with respect to the horizontal. Find the magnitude of the force of friction
An electrical outlet for an electric stove provides a potential difference of 240 V, rms. Find the amplitude of the potential difference
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistanceRof 8.0 ? as shown in the figure. The wire and the rod are placed in the plane of the paper.
Two ball shells are nested together ( centers exerting). The smaller balls diameter is R1 and bigger ones R2, Derive capacitance of the system from its definition C=Q/I?VI
consider a single turn circular loop of radius 20 cm. a at what point along the axis is the magnetic field 1 of that at
A 65kg person throws a 0.0410 kg snowball forward with a ground speed of 28.0 m/s. A second person, with a mass of 60kg, catches the snowball. Both people are on skates.
A 1000-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam.
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