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A variable-length air column is placd just below a vibrating wire that is fixed at both ends. The lenth of the air column open at one end is gradually increased from zero until the first position of resonance is observed at L=34.0cm. The wire is 120cm long and is vibrating in its third harmonic. If the speed of sound in air is 340m/, what is the speed of transverse waves in the wire?
A long straight wire has fixed negative charge with a linear chargedensity of magnitude 4.0 nC/m. The wire isto be enclosed by a coaxial, thin-walled, nonconducting cylindricalshell of radius 1.6 cm.
three test charges each with a charge of 1x10-6 c are located at the points of an equilateral triangle. if the legs of
At a certain instant a particle (mass=0.5 kg) is moving in the +x direction with velocity 14 m/s. What is the magnitude of the momentum of the particle (in kg*m/s) at the end of this 0.15 second interval
When a thin slab of semiconducting material is illuminated with monochromatic electromagnetic radiation, Determine the energy gap of the semiconductor
A plastic bar is rubbed with fur, and the bar aquires a net charge of +8.34 uC. Determine the net charge on the fur
An ac generator with a frequency of 1.54kHz and an rms voltage of 22.2V is connected in series with a 1.90k, What is the power factor for this circuit
A high intensity desk lamp is rated at 45W but requires only 12V. It contains a transformer that converts 120V household voltage. What is the current in the secondary coil
Kathy Kool buys a sports car that can accelerate at the rate of 5.20 m/s2. She decides to test the car by racing with another speedster, Find the time it takes Kathy to overtake Stan
a 0.22 kg block of cheese lies on the floor of a 870 kg elevator cab that is being pulled upward by a cable through distance d = 2.3 m. how much work is done on the cab by the force from the cable
A ray of light is incident normally on a glass plate 6.00 cm thick and of refractive index n = 1.29, find the increase in the distance the ray travels in the glass
What must be the temperature of the cold reservoir in order to increase the efficiency to 29.0%
A sound wave frequency 256Hz is propagating in air at 343m/s/ How far apart are two points on the wave that differ in phase by pi/2 and 90
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