A student stands on the edge of a merry-go-round which rotates five times a minute and has a radius of two meters one evening as the sun is setting. The student produces a shadow on the nearby building. (a) Write an equation for the position of the shadow. (b) Write an equation for the velocity of the shadow.

Q: A P-wave strikes an interface between two rock types at an angle of incidence of 63.0°. The speed of…

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Q: A stone is dropped into a well. The sound of the splash is heard 5.16 s later. What is the depth of…

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Q: Light always Select one: a.has the same color. b.travels in the same direction. c.has the same…

A: a. White colour consists of different colors so light doesn't has same color. b. Light can travel in…

Q: child dropped a ball from a building. The sound of it hitting the water of the swimming pool below…

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Q: A stone is dropped into a well. Three seconds later, the sound is heard at the top of the well. What…

A: Given,        speed of sound in the air, v=1100 ft/s = 1100* 0.3048 m/s= 335.28 m/s        and time…

Q: Which two statements below are correct for sound and light traveling through air near the Earth's…

A: Required: The speed of light and speed of sound

Q: A meteorologist for a TV station is using radar to determine the distance to a cloud. He notes that…

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Q: The Doppler effect is the change in observed frequency due to a) the original frequency of the…

A: The motion of source / observer causes the change in frequency which is observed by the observer.…

Q: Two cars A & B are travelling away from each other and blowing their horns. You are sitting in car B…

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Q: Which of the following describes the sound waves? they can travel only in medium O they can travel…

A: Part c and part d are the properties of light waves. The sound waves require medium for propogation.…

Q: An object is dropped from the top of a cliff 660 meters high. It's height a voice the ground t…

A: Given data The height of the cliff is h = 660 m. The position equation of the object is given as s =…

Q: S (m) 30 25+ 20+ 15 + 10+ 5 + 1 3 4 Fig. 2.14 Graph of s

A: The slope of the position time graph gives the velocity.  (A) velocity = 30- 06 - 0 = 5 m/s

Q: 4. Compared to the period of a wave of red light the period of a wave of green light is (1) less (2)…

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Q: A shell fired at a target 800 m distant was heard to strike it 5.0 s after leaving the gun. Compute…

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Q: - If a thunder is heard by a man 4 seconds after the lightning is seen, how far is the lightning…

A: We know that light travels at speed of light( which is very large). Thus, Lightning seen as early as…

Q: On increasing the temperature, the speed of sound in air: a. first increases then become constant b.…

A: Speed of sound in air with temperature is given by  v=331+0.61T where v is speed and T is…

Q: Two cars A & B are travelling towards one another and blowing their horns. You are sitting in car B…

A: Let original frequency produced was f velocity of observer Vo = 27.44 m/s velocity of source Vs =…

Q: At its peak, a tornado is 68 m in diameter and has 230 km/h winds. What is its frequency in…

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Q: Ultrasound is absorbed in the body; this complicates the use of ultrasound to image tissues. The…

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Q: A radar pulse returns 4.0x 10-8 s after it was sent out and reflected by an object what is the total…

A: Formula of distance traveled by radar pulse is as follows; d=t2×c…

Q: In a football stadium, an announcer call plays over a loud speaker. The sound wave has a frequency…

A: time taken , t=3.13 s. Distance, s=89.68 m.

Q: In some rural towns a loud whistle will announce noon. If you set your watch by this noon whistle…

A: Distance, d = 5.6 km = 5.6×1000 m = 5600 m Speed of sound, v = 330 m/s

Q: A lighting is observed, followed by thunder 2.55 seconds later. If speed of sound in air is 343 m/s,…

A: Thunder is heard after striking of light . Speed of sound in air = 343  Thunder sound is heard after…

Q: A stone is dropped into a well. The sound of the splash is heard 2.76 s later. What is the depth of…

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Q: Bebang stands shoulder deep in the pool and observes that six crests of periodic surface waves pass…

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Q: A man on a dock observes that the distance between two successive crests of a water  wave is 4.00 m.…

A: Given data: The distance between two successive crests of a water wave = 4.00 m The time taken to…

Q: Wavelength of ultrasonic waves in air is of the order of : (a) 5 x 10- m () 5x 10' m (6) 5 x 10' m…

A: To find  Order of wavelength of ultrasonic waves in air Calculation We know that frequency of…

Q: Decibel is the unit of   A) speed of light B) intensity of sound C) intensity of heat D) None of…

A: Decibel is the unit to measure the intensity of sound.

Q: A stone is dropped into a well. The sound of the splash is heard 6.07 s later. What is the depth of…

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Q: An observer at sea level does not hear an aircraft flying at 6000-m standard altitude until 15 s…

A: The Mach number is defined as nothing but the ratio of the speed of an object to the speed of sound…

Q: A bat chirps to locate a tasty lunch. The chirp travels at the speed of sound in air and its echo is…

A: Let the distance to the lunch be D metersTotal distance travelled by the chirp, is 2D; velocity of…

Q: A certain radio station broadcasts at 1560 kilohertz. This is the frequency of oscillation of…

A: We know, Time period (T) = 1/[frequency (f)]

Q: the reflection of sound is often heard as an echo. if a person claps her hands and hears an echo off…

A: In order to hear echo, the sound has to go from source to wall and then back to source.

Q: celebrity holds a press conference, which is televised live. A television viewer hears the sound…

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Q: A basketball coach paces back and forth along the sideline 17 times in 6 minutes. The frequency of…

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Q: The water waves below are traveling along the surface  of the ocean at a speed of 2.5 m/s and…

A: Given, Speed of waves,v=2.5 m/s Distance between adjacent crest = Wavelength,λ=5 m

Q: To navigate, a porpoise emits a sound wave that has a wavelength of 2.2 cm. The speed at which the…

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Q: Blue light travels with a frequency of 6.7 ×1014 Hz in air. Its frequency will ________when…

A: Given data:  Blue light Frequency in air (f) = 6.7×1014 Hz Required: The frequency of blue light in…

Q: 6. Solve for unknown parameters 90 0.91 6A A

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Q: at 6:30 AM the shadow of a building is 18 meters. at the same time the shadow of an 8 meter high…

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Q: Two cars A & B are travelling towards one another and blowing their horns. You are sitting in car B…

A: The change in frequency of waves due to the relative motion of the source and the observer is called…

Q: Two cars A & B are travelling towards one another and blowing their horns. You are sitting in car A…

A: Answer:-  Given  Speed of car A (Va) = 27.2 m/s  Speed of car B (Vb) = 24.2 m/s  Frequency of car…

Q: While hiking through a canyon, Noah Formula lets out a scream. An echo (reflection of the scream off…

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Q: The speed of sound in day time is more than speed of sound in night time, because of: a. more…

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Q: If thunder is heard 26 s after a lightning flash is observed approximately how far away is the…

A: If thunder is heard 26 s after a lightning flash is observed approximately how far away is the…

Q: A baseball fan sitting in the cheap seats is 150 m from home plate. how much time elapses between…

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Q: The Doppler effect is observed when the source of the sound is moving ____ than the speed of the…

A: Doppler effect is the change in frequency of a wave in relation to an observer who is moving…