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Problem 9.3. Interference fringes were produced by two slits 0.25 mm apart on a screen 150 mm from the slits. If eight fringes occupy 2.62 mm. What is the wavelength of the light producing the fringes? Nature of Light problem 3. Sindh Textbook Board (stb) problems

Problem 9.3. Interference fringes were produced by two slits 0.25 mm apart on a screen 150 mm from the slits. If eight fringes occupy 2.62 mm. What is the wavelength of the light producing the fringes?

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Problem 8.9. An ambulance travels down a highway at a speed of 75 mi/h. Its siren emits sound at a frequency heard by a person in a car traveling at 55 mi/h in the opposite direction as the car approaches the ambulance and as the car moves away from the ambulance. Wave Motion And Sound problem 9. Sindh Textbook Board (stb) problems

Problem 8.9. An ambulance travels down a highway at a speed of 75 mi/h. Its siren emits sound at a frequency heard by a person in a car traveling at 55 mi/h in the opposite direction as the car approaches the ambulance and as the car moves away from the ambul…

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Problem 8.7. The frequency of the second harmonic of an open pipe (open at both ends) is equal to the frequency of the second harmonic of a closed pipe (open at one end). (a) Find the ratio of the length of the closed pipe to the length of the open pipe.(b) If the fundamental frequency of the open pipe is 256 Hz, what is the length of pipe? (Use v = 340 m/s). Wave Motion And Sound problem 7. Sindh Textbook Board (stb) problems

Problem 8.7. The frequency of the second harmonic of an open pipe (open at both ends) is equal to the frequency of the second harmonic of a closed pipe (open at one end). (a) Find the ratio of the length of the closed pipe to the length of the open pipe.(b) I…

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Problem 8.6. A sound wave propagating in air has a frequency of 4000 Hz. Calculate the percent change in wavelength when the wavefront, initially in a region where T = 27°C, enters a region where the air temperature decreases to 10°C. Wave Motion And Sound problem 6. Sindh Textbook Board (stb) problems

Problem 8.6. A sound wave propagating in air has a frequency of 4000 Hz. Calculate the percent change in wavelength when the wavefront, initially in a region where T = 27°C, enters a region where the air temperature decreases to 10°C.

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Problem 8.3. A pipe has a length of 2.46 m. (a) Determine the frequencies of the fundamental mode and the first two overtones if the pipe is open at both ends. Take v = 344 m/s as the speed of sound in air. (b) What are the frequencies determined in (a) if the pipe is closed at one end? (c) For the case of open pipe, how many harmonics are present in the normal human being hearing range (20 to 20000 Hz)? Wave Motion And Sound problem 3. Sindh Textbook Board (stb) problems

Problem 8.3. A pipe has a length of 2.46 m. (a) Determine the frequencies of the fundamental mode and the first two overtones if the pipe is open at both ends. Take v = 344 m/s as the speed of sound in air. (b) What are the frequencies determined in (a) if th…

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Problem 8.2. A body hanging from a spring is set into motion and the period of oscillation is found to be 0.50 s. After the body has come to rest, it is removed. How much shorter will the spring be when it comes to rest? Wave Motion And Sound problem 2. Sindh Textbook Board (stb) problems

Problem 8.2. A body hanging from a spring is set into motion and the period of oscillation is found to be 0.50 s. After the body has come to rest, it is removed. How much shorter will the spring be when it comes to rest?

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Problem 8.1. An object is connected to one end of a horizontal spring whose other end is fixed. The object is pulled to the right (in the positive x-direction) by an externally applied force of magnitude 20 N causing the spring to stretch through a displacement of 1 cm (a) Determine the value of force constant if, the mass of the object is 4 kg (b) Determine the period of oscillation when the applied force is suddenly removed. Wave Motion And Sound problem 1. Sindh Textbook Board (stb) problems

Problem 8.1. An object is connected to one end of a horizontal spring whose other end is fixed. The object is pulled to the right (in the positive x-direction) by an externally applied force of magnitude 20 N causing the spring to stretch through a displaceme…

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Problem 7.8. A rocket of mass 0.200 kg is launched from rest. It reaches a point p lying at a height 30.0 m above the surface of the earth from the starting point. In the process + 425 J of work is done on the rocket by the burning chemical propellant. Ignoring air-resistance and the amount of mass lost due to the burning propellant, find the speed Vy of the rocket at the point P. Work Power And Energy problem 8. Sindh Textbook Board (stb) problems

Problem 7.8. A rocket of mass 0.200 kg is launched from rest. It reaches a point p lying at a height 30.0 m above the surface of the earth from the starting point. In the process + 425 J of work is done on the rocket by the burning chemical propellant. Ignori…

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Problem 7.7. A body of mass ‘m’ accelerates uniformly from rest to a speed Vy in time ty. Show that the work done on the body as a function of time ‘t’, in terms of Vy and ty, is 1/2m(Vf2/tf2)t2. Work Power And Energy problem 7. Sindh Textbook Board (stb) problems

Problem 7.7. A body of mass ‘m’ accelerates uniformly from rest to a speed Vy in time ty. Show that the work done on the body as a function of time ‘t’, in terms of Vy and ty, is 1/2m(Vf2/tf2)t2.

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Problem 7.6. A horse pulls a cart horizontally with a force of 40 Ib at an angle 30° above the horizontal and moves along at a speed of 6.0 miles/hr. (a) How much work does the horse do in 10 minutes? (b) What is the power out put of the horse? Work Power And Energy problem 6. Sindh Textbook Board (stb) problems

Problem 7.6. A horse pulls a cart horizontally with a force of 40 Ib at an angle 30° above the horizontal and moves along at a speed of 6.0 miles/hr. (a) How much work does the horse do in 10 minutes? (b) What is the power out put of the horse?

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