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A piano tuner hears a beat frequency of 6.2 Hz when comparing the piano's A-string against a reference tuning fork vibrating at 440 Hz. Assuming the piano strong has too low a pitch, what percent increase in tension is needed to bring the string into tune? You answer should be given to the nearest tenth of a percent.
Three deer, A, B, and C, are grazing in a field. Deer B located 64 m from dear A at an angle of 53° north of west, What is the distance between deer A and C
Two vehicles approach a right angle intersection and then collide. After the collision, they become entangled. If their mass ratios were 1:3 and their respective speeds as they approached were both 13 m/s, find the magnitude and direction of the fina..
A relief airplane is delivering a food package to a group of people stranded on a very small island. What is the velocity of the plane if the pilot successfully drops the package from a horizontal distance, D, equal to 600 m from the site
The electric potential difference between two infinite, parallelmetal plates is V. If the plates are separated by adistance L = 4.7 mm and the electric field between the plates is E = 265 V/m, what is V?
Tarzan, whose mass is 80.0 kg, swings from a 3.00-m vine thatis horizontal when he starts. What is the height of the highest tree limb they can reach on the upwardswing
A sample contains radioactive atoms of two types, A and B. Initially there are five times as many A atoms as there are B atoms. obtain the half life in hours
An LC circuit consists of a capacitor, C = 1.74 µF, and an inductor, L = 5.32 mH. The capacitor is fully charged using a battery and then connected to the inductor. An oscilloscope is used to measure the frequency of the oscillations in the circui..
A 4.25g bullet traveling horizontally with a velocity of magnitude 375m/s is fired into a wooden block with mass 1.10kg , How fast is the block moving just after the bullet emerges from it
a penny is sitting on the edge of an old phonograph disk that is spinning at 45 rpm and has a diameter of 6.5 inches.
Compute the linear momentum and angular momentum of a Frisbee of mass 0.130 kg if it has a linear speed of 1.25 m/s and an angular velocity of 62.5 rad/s
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. In a standard treatment, 2.0 kg of beef receives 4.5 kGy of radiation in 48 s. (A) How much energy is deposited in the beef in kJ? (B) What is the a..
A potter's wheel -- a thick stone disk of radius 0.500 m and mass 110 kg -- is freely rotating at 50.0 rev/min. Find the effective coefficient of kinetic friction between the wheel and the rag
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