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A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, a pulse travels down the wire and returns 7.84 ms later, having reflected off the lower end. The speed of sound in the room is 344 m/s, and the stone is heavy enough to prevent the lower end of the wire from moving. If the wire is vibrating in its second overtone, what is the wavelenth of the sound it will produce?
A violin is tuned by adjusting the tension in the strings. OnBrian’s violin, the “A” string is tuned to aslightly lower frequency than Andrew’s, which is correctlytuned to 440.0 Hz.
Consider a conical pendulum with a 86.0 kg bob on a 10.0 m wire making an angle of ? = 7.00° with the vertical. What is the radial acceleration of the bob
An outfielder throws a 0.150 kg baseball at a speed of 36.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion
An electron moving in one dimension is confined between two walls seperated by a distance L = 10^-10 m. What is the average force that the electron exerts on the walls
Gas is contained in a 9.00-L vessel at a temperature of 25.0°C and a pressure of 5.00 atm. Determine the number of moles of gas in the vessel
1- if an area is described as a good air mass source region what information can you give about it?2- it is summer.
A 60 skydiver can be modeled as a rectangular "box" with dimensions 21 41 1.8. What is his terminal speed if he falls feet first
A 1650-kg car is traveling at 34 m/s. How fast must a 91 kg bicycle and rider be traveling to have the same kinetic energy as the car.
An electron is accelerated from rest through a potential difference that has a magnitude of1.65 107 V. what is the relativistic kinetic energy (in joules) of the electron
A movie camera with a (single) lens of focal length 70 mm takes a picture of a person standing 29 m away. what is the height of the image in millimeters on the film
an object is placed 5 cm in front of a concave lens of focal length 7 cm. find the image location by drawing a ray
a 950 kg boat is traveling at 110 kmh when its engine is shut off. the magnitude of the frictional force fk between
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