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A stretched string of length L is observed to vibrate in five equivalent segments when driven by a 724 Hertz oscillator. Find what oscillator frequency will set up a standing wave so that the string vibrates in three segments?
_________Hz
Consider a person that is nearsighted and can clearly focus on objects that are no farther than 2.8 m away from her eyes. Now suppose she borrowed a friend's glasses that make things worse; that is, the person can now focus only on things that are w..
In a circut all six resistors share the same value R. Calculate the equivalent resistance between points A & B
A tuning fork with a frequency of 440 Hz is held just above the top of a uniform glass tube containing water. What is the speed of sound in air
A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. how fast is the student going at the bottom of the slide
A 0.250 m radius, 500-turn coil is rotated one-fourth of a revolution in 4.17 ms, originally having its plane perpendicular to a uniform magnetic field. (This is 60 rev/s.) Find the magnetic field strength needed to induce an average emf of 10,000 V
The lenes of a particular set of binoculars have a coating with index of refraction n=1.38, If the lenses refelct a wavelength of 540nm the most strongly, what is the minium thinkcness of the coating
A parallel-plate air capacitor is made from two plates 0.070 square, spaced 9.3 apart. What must the potential difference between plates be to produce an energy density of.
an airplane starts from rest and accelerates at a constant 3.00 m/s^2 for 30.0 s before leaving the ground. how fast was the airplane going when it took off
A mass-spring system has k = 55.2N/m and m = 0.405kg. Find the frequency of its simple harmonic motion
A copper bar 30.0 cm long is perpendicular to a field of flux density 0.80 Wb/m2 and moves at right angles to the field with a speed of 0.50 m/s
A 14 kilogram box slides down a long, frictionless incline of angle 30 degree. Calculate the kinetic energy and the speed of the box just as it reaches the bottom of the incline
Suppose that the Earth's orbit around the Sun is perfectly circular. Employing conservation arguments, find the value of the eccentricity e of the orbit
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