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Air in a cylinder is compressed to one-tenth of its actual volume without change in temperature. Explain what happens to its pressure? Imagine now that a valve is opened in order to restore the initial pressure value. Obtain what percentage of the molecules has escaped?
The two loudspeakers in the drawing are producing identical soundwaves. The waves spread out and overlap at thepoint P. This situation is analogous to Young’sdouble-slit experiment, except that sound waves are being used.
A coyote can locate a sound source with good accuracy by comparing the arrival times of a sound wave at its two ears. What is the distance between the bird and the coyote's left ear
Suppose a block with mass 2.30kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.420.
Rocky's base metabolic rate is 100 W (when not exercising). He weighs 80 kg. This morning, he climbed stairs 25-cm high at the rate of 140 steps per minute for 30 minutes on a Stairmaster. How much energy did he burn (in J and in kWh)
(a) Construct the wave function for hydrogen in the state n=4, l=3, m=2. Express your answer as a function of the spherical coordinates (r,theta,phi). (b) Find the expectation value of r in this state.
Two identical batteries of emf ε = 5.07 V and internalresistance r = 0.208 Ω are to be connectedto an external resistance R, either in parallel (Fig.27-52) or in series (Fig. 27-53). If R = 0.467Ω, what is the current i (in A) in the external resi..
one end of a nylon rope is tied to a stationary support at the top of a vertical mine shaft of depth 85.0m . the rope
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower. At top speed the planes fly at a 59.0 o bank approximately 12.0 m from the tower, Calculate the speed of the planes
A water pipe having a 2.2 cm inside diameter carries water into the basement of a house at a speed of 0.85 m/s, What is the water pressure at the second floor
An energy of 28.0 eV is required to ionize a molecule of the gas inside a Geiger tube, What maximum number of ion pairs can it create
A child ties a rock to a string and whirls it around in a horizontal circle. find the period of its uniform circular motion
A series RCL circuit has a resonant frequency of 2200 Hz. When operating at a frequency other than 2200 Hz, the circuit has acapacitive reactance of 5.50 Ohms and an inductive reactanceof 35.0 Ohms.
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