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Two equal objects (of mass m) on effectively frictionless horizontal air track are held between rigid supports by three identical springs (spring constant k) in a set up of one spring attached to each of the supports and one of the masses and the third spring between the masses. A) what is the frequency of oscillation if one of the masses is clamped down? B) what are the frequencies of the two modes of vibration when both masses are allowed to vibrate freely?
An archeological specimen containing 8.7 g of carbon has an activity of 1.8 Bq. How old (in years) is the specimen
An astronomical telescope uses an eyepiece of power +100.0 D. what are the power of the objective and the magnifcation of the telescope
A bat at rest sends out ultrasonic sound waves at 46.9kHz, What is the received sound frequency
Find out the object position p for the image to be erect and 7 times the size of the object. Focal length is 46 cm.
The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. find the velocity of the water when it hits the bottom
A thin, 80.0 g disk with a diameter of 6.00 cm rotates about an axis through its center with 0.300 J of kinetic energy
An m1 = 8.0 kg box lies on a frictionless table, and is attached to a m2 = 5.0 kg box by a light cord passing over a rotating pulley. find the tension in the cord both above and below the pulley
A solid block is suspended from a spring scale. The reading on the scale when the block is completely immersed in water is 25.8 N, and the reading when it is completely immersed in a liquid of density 869 kg/m3 is 26.7 N.
A 1,576-kg car is moving down a road with a slope (grade) of 11% while speeding up at a rate of 3.6 m/s^2. What is the direction and magnitude of the frictional force
A stick of mass m and length L spins with frequency w around an axis, What is the tension in the string, and what is the force that the pivot applies to the stick
An Atwood Machine consists of two blocks m1= 15 kg and m2= 23 kg connected by a masslessstring, What is the normal force on the pin supporting the pulley
A 12-V battery is connected in series with a switch, 6.0-ohms resistor and coil. What energy is stored in the coil when the current is 2.0 A
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