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- An airplane moves at Mach 1.2 and produces a shock wave. (a) What is the speed of the plane in meters per second? (b) What is the angle that the shock wave moves?For items 1-2, choose only one correct answer. 1. What is the speed of sound when the temperature is 39°C in aluminum? A. 5119.2 m/s B. 5122.2 m/s C. 5123.4 m/s D. 5127.4 m/s 2. What is the gravitational field strength in N/kg on the surface of the sun? Given: r= 6.96x10^8 m m= 1.99x10^30 kg A. 1.6 B. 9.8 C. 127 D. 274A VOcaro0 | Ohline vo.. se Mirsal The Ri.. alió ö Lio Demo document Liveworksheets.co... chnological College Apps Social networks Tihe ocedures Useful Links► Help» This module * Participants » Sulaiman based on Chapter-11 sics 2 What is the frequency of the sound wave in the air when the temperature is 350 K and the wavelength is 0.7 m? (Use speed of sound at 0 C = 331 m/s) of Select one: а. 350 Hz estion b. 245 Hz c. 535.40 Hz Previous page Next page Chapter-12 Optics► actice Quiz Experiment-1, T-2, AY Jump to... 20-21
- A series of ocean waves, each 6.0 m from crest to crest, move past an 1.observer at a rate of 2 waves per second. Calculate the velocity of the waves. 2. A low C (f = 65Hz) is sounded on a piano. If the length of the piano wire is 2.0 m and its mass density is 5.0 g/m2, determine the tension of the wire. 3. A beam of light is incident upon a flat piece of glass (n = 1.50) at an angle of incidence of 30.00. Part of the beam is transmitted and part is reflected. Determine the angle between the reflected and transmitted rays. 4. An underwater diver sees the sun at an apparent angle of 45.00 from the vertical. How far is the sun above the horizon? [ 5. Light in air enters a diamond (n = 2.42) at an angle of incidence of 30.00. Determine the angle of refraction inside the diamond. 6. Which eye defect is corrected by a lens having different curvatures in two perpendicular directions? 7. A 1.70 m tall woman stands 5.00 m in front of a camera with a 50.00 cm focal length lens. Calculate the…Solve the following. Round off your answers to two decimal places. You are approaching a stationary sound of 1000Hz at 35 m/s. 1.What is the frequency of the sound as you approach the source? 2.What is the frequency of the sound as you pass the source? 3.What is the change in frequency as you pass the source?A hammer taps on the end of a 4.0 m long metal bar at room temp. A microphone on the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 11 ms. a. what is the speed of sound in theis metal? solved: v= 6060m/s. b. if the bar was twice as long, what would be the time difference? delta t = (in ms)
- Solve/Answer the following problems. Show your solutions. III. 1. Suppose you want to increase the level of sound by 15.0 dB. Determine the factor to which the sound intensity must be increased. Explain your answer. It is winter, and the temperature decrease to -5°C. Assume that the length of a certain steel bar is 10. 0 m. find the length of the steel bar during summer when the temperature is 40°C. (Thermal Expansion) 3. In a half-hour, a 65-kg jogger can generate 8.0x10³J of heat. This heat is removed from the body by a variety of means, including the body's own temperature-regulating mechanisms. If the heat were not removed, how much would the body temperature increase? (Specific heat Capacity) 2. 58Direction: Show the complete solution for the following problems. Use a clean sheet of paper in answering. 1. The hearing range of a normal human ear is from 20 to 20000 Hz. If the speed of the sound in air is 340 m/s, what are the shortest and the longest wavelengths that the human ear can hear? 2. If the speed of wave in passing from medium A to medium B doubles while keeping the frequency constant, what happens to the wavelength? 3. Suppose that two-point charges, each with a charge of +1.00 Coulomb are separated by a distance of 1.00 meter. Determine the magnitude of the electrical force of repulsion between them.Jeremiah was investigating different aspects of sound waves. He listened to two sounds. Sound 1 had a lower pitch than Sound 2. Based on this information, how was Sound Wave 1 different from Sound Wave 2? O A. Sound Wave 1 had a smaller amplitude than Sound Wave 2. B. Sound Wave 1 had a shorter wavelength than Sound Wave 2. C. Sound Wave 1 had a slower speed than Sound Wave 2. D. Sound Wave 1 had a lower frequency than Sound Wave 2.
- III: Solve/Answer the following problems. Show your solutions. 1. Suppose you want to increase the level of sound by 15.0 dB. Determine the factor to which the sound intensity must be increased. Explain your answer. 2. It is winter, and the temperature decrease to -5°C. Assume that the length of a certain steel bar is 10. O m. find the length of the steel bar during summer when the temperature is 40°C. (Thermal Expansion) 3. In a half-hour, a 65-kg jogger can generate 8.0x105J of heat. This heat is removed from the body by a variety of means, including the body's own temperature-regulating mechanisms. If the heat were not removed, how much would the body temperature increase? (Specific heat Capacity)ssword IA. We New Message Recipients D Subject pa a whale makes a sound in the Water with a frequency of 300 Hz sound moves at a speed of 1400 m/sin water, and 340 m/s in air. What is the wavelength of that sound in the water? and what is the wavelength and frequency of that sound in the ai? his c act C のLight travels approximately 3.0 x 10³ m/s in outer space. If yellow light from the sun has a wavelength of 5.70x10 11 m what is its frequency? Select one: a. 5.26 Hz b. o.000526 Hz c. 5.26 x10^18 Hz d. .00000526HZ