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A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is 0.400 m long and has a mass of 3.00 g
a) What is the frequency of its fundamental mode of vibration?
b) What is the nurmber of the highest hamonic that could be heard by a person who is capable of hearing frequencies up to 10000 Hz?
A satellite in geosynchronous orbit orbits the earth in 24 hours. find the radial velocity and the angular velocity
Two round rods, one steel and the other copper, are joined end to end. Each rod is 0.795m long and 1.85cm in diameter. The combination is subjected to a tensile force with magnitude 3950N.
A body in free fall reaches the ground in 5 s. From what height in meters was it dropped
A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. What is the refractive index of the film
A cylinder in a car engine takes Vi = 4.50 multiply.gif 10-2 m3 of air into the chamber at 30° C and at atmospheric pressure. What is the new temperature of the air
what is the velocity of plane with respect to the ground. A nonconducting sphere has radius R = 2.53 cm and uniformly distributed charge q = +6.00 fC. Take an electric potential at the sphere's center to be V0 = 0.
A Ge semiconductor has a gap of 0.7 eV between the valence and conduction band. What fraction of the electrons are in the conduction band
Three point charges Q1 = 2.2 mu or micro C, Q2 = 4.2 mu or micro C and Q3 = 3.2 mu or micro C, are arranged as shown
A spring with constant k = 10 N/m is attached to a block. What is the force on the block by the spring when the spring has been stretched by 0.05 m
A 120-g mug at 21C is filled with 210g of coffee at 91C. suppose all of the heat lost by the coffee is transferred to the mug, what is the final temperature of the coffee? The specific heat capacity of the mug is 7.8 X 10^2 J/(Kg C)
A cylindrical wire is carrying a current that is non-uniform in both space and time, Find an equation that describes magnetic field inside the wire due to the current as a function of r from the center of the wire
Two isolated conducting spheres of equal radius R have charges +Q and -Q, respectively. Estimate the capacitance of this unusual capacitor
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