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A thin 7.3-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. There are no other antinodes. The density and Young's modulus of this metal are, respectively, 5300 kg/m3 and 8.6x1010 N/m2. What is the frequency of the rod's vibration?
An 800 g ball moves in a vertical circle on a 1.07-m-long string. If the speed at the top is 5-m/s, after that the speed at the bottom would be 8.18 m/s.
In a ballistics test, a 22.0g bullet traveling horizontally at 1300m/s goes through a 30.0cm -thick 350kg stationary target and emerges with a speed of 900m/s, How long is the bullet in the target
A floodlight with a mass of 46.00 kg is used to clarify the parking lot in front of a library. The floodlight is supported at the end of horizontal beam that is hinged to a vertical pole. A cable that makes an angle of 29 degrees with the beam is att..
A small air-core solenoid has a length of 18 cm and a radius of 0 . 53 cm. The permeability of free space is 1 . 25664 × 10 ? 6 N / A 2 . how many turns per centimeter (whole turns plus fractional turns) are required
2 mol of a diatomic ideal gas expand adiabatically and quasi-statically. The initial temp of the gas is 300K, What is the final temp of the gas
A standing wave is created on a string of length 1.0 m and fixed at both ends. What is the wavelength of the third harmonic
A steel wire 2.00m long with circular cross section must stretch no more than 0.260cm, What minimum diameter must this wire have
You land on a spherical asteroid and take a walk for 3km. You notice that the stars ahead of you rise 36 degrees as you walk
A broad beam of light of wavelength 642 nm is incident at 90° on a thin, wedge-shaped film with the index of refraction 1.50. An observer intercepting light transmitted by the film sees 17 bright and 16 dark fringes along the length of the film. B..
An ocean liner leaves New York City and travels 13° north of east for 268 km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the following directions.
a 753 kg elevator starts from rest. it moves upward for 3.04 seconds with a constant acceleration until it reaches its cruising speed of 2.07 m/s
A small 12.3 g plastic ball is tied to a very light 28.6 cm string that is attached to the vertical wall of a room, Find the magnitude and direction of the electric field in the room
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