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A violin string which is 30.4 cm long is tuned so that its pitch is concert A, which is 440 Hz. I can effectively shorten the string by placing my finger on it and pressing down. How far (cm) from the end of the string should I put my finger if I want the pitch of the note to be 539 Hz? (Give the distance from the end where the wooden tuning pegs are located.) Assume that the tension in the string remains the same. Give the answer to 2 significant figures.
A sled is dragged along a horizontal path at a constant speed of 1.5 m/s by a rope that is inclined at an angle of 30.0° with respect to the horizontal, How much work is done by the rope on the sled
q1. an auditorium has dimensions 10.0 m 32.0 m 36.0 m. how many molecules of air fill the auditorium at 190.0degc and a
It eventually launches horizontally off of the table and takes the path of a projectile until it hits the ground 40 centimeters from the edge of the table.
An unstable particle with a mass equal to 3.34 multiplied by 10-27 kg is initially at rest. The particle decays into two fragments that fly off with velocities of 0.981c and -0.864c, respectively. Find the masses of the fragments. (Hint: Conserve ..
a point charge has a charge of -7.00 micro c. estimate the strength and direction of the electric field at a distance
A light source, S, is located 2.60m below the surface of a swimming pool and 1.30m from one edge of the pool. The pool is filled to the top with water.
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
A tank having a volume of 0.11 m3 contains helium gas at 170 atm. How many balloons can the tank completely fill
A circular plastic rod of radius R = 1.20 m has a positive charge = Q = 3.00×10-6 C uniformly distributed along one-quarter of its circumference and a negative charge of -4Q uniformly distributed along the rest of the circumference (see the figure..
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
The coefficient of linear expansion os steel is 0.000012/C. A section of a railroad track consists of 5.0 km in length. By what length would this rail change
A parallel-plate air capacitor of area A= 19.0 cm2 and plate separation d= 2.80 mm is charged by a battery to a voltage 58.0 V. how much additional charge will flow from the battery onto the positive plate
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